Processing math: 100%
MathTV Logo TOPICS
 
CHOOSE A TOPIC
MathTV Logo

Search Results
Math Topics

Elementary Algebra
Quadratic Equations

1
Square Root Property

Problem  1

Solve x216=0

Choose instructor to watch:
CJ
CJ
Molly S. cc
Molly S.
Gordon
Gordon
Cynthia espanol spanish
Cynthia
Problem  2

Solve 2x25x=12

Choose instructor to watch:
CJ
CJ
Molly S. cc
Molly S.
Gordon
Gordon
Gordon espanol spanish
Gordon
Problem  3

Solve 16a225=0

Choose instructor to watch:
CJ
CJ
Molly S. cc
Molly S.
Gordon
Gordon
Cynthia espanol spanish
Cynthia
Problem  4

Solve for x: x2=5

Choose instructor to watch:
CJ
CJ
Molly S. cc
Molly S.
Gordon
Gordon
Gordon espanol spanish
Gordon
Problem  5
practice icon

Solve for a: 5a2=60

Choose instructor to watch:
CJ
CJ
Molly S. cc
Molly S.
Gordon
Gordon
Cynthia espanol spanish
Cynthia
Problem  6

Solve for y: (y+4)2=25

Choose instructor to watch:
CJ
CJ
Molly S. cc
Molly S.
Gordon
Gordon
Gordon espanol spanish
Gordon
Problem  7
practice icon

Solve (2x3)2=25

Choose instructor to watch:
CJ
CJ
Molly S. cc
Molly S.
Gordon
Gordon
Cynthia espanol spanish
Cynthia
Problem  8
practice icon

Solve (4y5)2=6

Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague
Breylor cc
Breylor
Preston cc
Preston
Stephanie cc
Stephanie
Problem  9
practice icon

Solve (2x+6)2=8

Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague
Breylor
Breylor
Preston
Preston
David espanol spanish
David
Problem  10
practice icon

If the shortest side in a 306090 triangle is 1 inch, find the lengths of the other two sides.

Choose instructor to watch:
Molly S. cc
Molly S.
Gordon
Gordon
Gordon espanol spanish
Gordon
Problem  11

Table 1 in the introduction to this section gives the vertical rise of the Comstock Express chair lift as 1,253 feet and the length of the chair lift as 5,649 feet. To the nearest foot, find the horizontal distance covered by a person riding this lift.

Choose instructor to watch:
Stephanie
Stephanie
Breylor
Breylor
Mini Lecture

Mini Lecture
Solve.

  1. y2=8

  2. 3a2=54

  3. (a5)2=75

  4. (4a5)2=36

  5. (3a+6)2=45

  6. (x+12)2=74

Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague

2
Completing the Square

Problem  1

Write the correct final term to make x214x a perfect square trinomial.

Choose instructor to watch:
CJ
CJ
Molly S. cc
Molly S.
Gordon
Gordon
Gordon espanol spanish
Gordon
Problem  2

Write the correct final term to make x2+20x a perfect square trinomial.

Choose instructor to watch:
CJ
CJ
Molly S. cc
Molly S.
Gordon
Gordon
Cynthia espanol spanish
Cynthia
Problem  3

Write the correct final term to make x2+5x a perfect square trinomial.

Choose instructor to watch:
CJ
CJ
Molly S. cc
Molly S.
Gordon
Gordon
Gordon espanol spanish
Gordon
Problem  4

Solve x24x+3=0 by completing the square.

Choose instructor to watch:
CJ
CJ
CJ
CJ
Gordon
Gordon
Cynthia espanol spanish
Cynthia
Problem  5

Solve 3x2+24x27=0 by completing the square.

Choose instructor to watch:
CJ
CJ
Molly S. cc
Molly S.
Gordon
Gordon
Gordon
Gordon
Problem  6

Solve y24y=0

Choose instructor to watch:
CJ
CJ
Molly S. cc
Molly S.
Gordon
Gordon
Cynthia espanol spanish
Cynthia
Problem  7

Solve by completing the square: x2+5x2=0

Choose instructor to watch:
CJ
CJ
Molly S. cc
Molly S.
Gordon
Gordon
Gordon espanol spanish
Gordon
Mini Lecture

Mini Lecture
Add a last term to complete the square.

  1. x2+16x

  2. y28y

  3. x2+7x

Solve by completing the square.

  1. x26x=16

Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague

3
The Quadratic Formula

Problem  1

Simplify the quadratic formula if a=4, b=4, and c=15.

Choose instructor to watch:
Mr. Hampton
Mr. Hampton
Stephanie
Stephanie
Breylor
Breylor
Problem  2

Simplify the quadratic formula if a=3, b=6, and c=1.

Choose instructor to watch:
Mr. Hampton
Mr. Hampton
Stephanie
Stephanie
Breylor
Breylor
Problem  3

Solve x24x5=0 by using the quadratic formula.

Choose instructor to watch:
CJ
CJ
Molly S. cc
Molly S.
Gordon
Gordon
Gordon espanol spanish
Gordon
Problem  4

Solve x29=0

Choose instructor to watch:
CJ
CJ
Molly S. cc
Molly S.
Gordon
Gordon
Cynthia espanol spanish
Cynthia
Problem  5

Solve for x: x2+2x=32

Choose instructor to watch:
CJ
CJ
Molly S. cc
Molly S.
Gordon
Gordon
Cynthia espanol spanish
Cynthia
Problem  6

Solve for x: (x+2)(x1)=9

Choose instructor to watch:
CJ
CJ
Molly S. cc
Molly S.
Gordon
Gordon
Gordon espanol spanish
Gordon
Mini Lecture

Mini Lecture
Solve using the quadratic formula.

  1. x2+5x+6=0

  2. x25x=7

  3. 3x2=4x+2

Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague
Take 5

Enrichment
Deriving the quadratic formula.

Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague
David espanol spanish
David

4
Complex Numbers

Problem  1

Add: (3+4i)+(26i)

Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague
Molly S. cc
Molly S.
Matt
Matt
David espanol spanish
David
Problem  2

Subtract: (54i)(6i)

Choose instructor to watch:
Mr. Hampton
Mr. Hampton
Stephanie
Stephanie
Breylor
Breylor
Problem  3

Simplify: (25i)(3+7i)+(2i)

Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague
Molly S. cc
Molly S.
Matt
Matt
Edwin espanol spanish
Edwin
Problem  4

Multiply: 4i(3+5i)

Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague
Molly S. cc
Molly S.
Matt
Matt
Edwin espanol spanish
Edwin
Problem  5

Multiply: (3+2i)(43i)

Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague
Molly S. cc
Molly S.
Matt
Matt
David espanol spanish
David
Problem  6

Divide 2+i5+2i

Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague
Molly S. cc
Molly S.
Matt
Matt
David espanol spanish
David
Mini Lecture

Mini Lecture
Combine.

  1. (6+2i)10i

  2. 9i+(2i)

Multiply.

  1. 2i(87i)

  2. (3+5i)(35i)

Divide.

  1. 2+i2i

Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague

5
Complex Solutions to Quadratic Equations

Problem  1

Write as a complex number:

  1. 4

  2. 36

  3. 7

  4. 75

Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague
Molly S. cc
Molly S.
Preston
Preston
David espanol spanish
David
Problem  2

Solve (x+2)2=9

Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague
Molly S. cc
Molly S.
Preston
Preston
Edwin espanol spanish
Edwin
Problem  3

Solve 110x215x=12

Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague
Betsy cc
Betsy
Preston
Preston
David espanol spanish
David
Problem  4

Solve: (2x3)(2x1)=4

Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague
Betsy cc
Betsy
Preston
Preston
Edwin espanol spanish
Edwin
Mini Lecture

Mini Lecture
Simplify.

  1. 49

  2. 8

Solve.

  1. 2x2+5x=12

  2. (x+12)2=94

  3. 12x2+13x+16=0

Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague

6
Graphing Parabolas

Problem  1
practice icon

Graph: y=x23

Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague
Betsy cc
Betsy
Preston cc
Preston
Julieta cc espanol spanish
Julieta
Problem  2

Graph y=(x2)2

Choose instructor to watch:
Betsy
Betsy
Preston
Preston
Edwin espanol spanish
Edwin
Problem  3

Graph y=(x+1)23

Choose instructor to watch:
Betsy
Betsy
Preston
Preston
Problem  4
practice icon

Graph x26x+5

Choose instructor to watch:
Betsy cc
Betsy
Preston cc
Preston
Edwin espanol spanish
Edwin
Problem  5

Find the intercepts for y=x26x+5.

Choose instructor to watch:
Mr. Hampton
Mr. Hampton
Stephanie
Stephanie
Breylor
Breylor
Problem  6

Find the intercepts for y=(x+1)23.

Choose instructor to watch:
Mr. Hampton
Mr. Hampton
Stephanie
Stephanie
Breylor
Breylor
Problem  7

Find the intercepts for y=x2+2x5 and use them to sketch the graph of the equation.

Choose instructor to watch:
Mr. Hampton
Mr. Hampton
Stephanie
Stephanie
Breylor
Breylor
Mini Lecture

Mini Lecture
Graph.

  1. y=x24

  2. y=(x+2)2

  3. y=(x+2)23

Choose instructor to watch:
Mr. McKeague cc
Mr. McKeague