Solving Quadratics Review

What is the first step in solving 
(x + 2)(x - 3) = 0      ?

• Plug in zero for x
• Solve for x
• FOIL
• Set each binomial factor equal to zero

Solve for the values of x:
(2x - 1)(x + 4) = 0

• { 1/2, -4 }
•  { 1/2, 4 }
• { 2, -4 }
• { -2, 4 }

Solve for the values of x:
(2x + 5)(5x - 2) = 0

• { -5/2, -2/5 }
• { -5/2, 2/5 }
• { 5/2, 2/5 }
• { 5/2, -2/5 }

Solve for m by factoring.

• A
• B
• C
• D

Solve for v by factoring.

• A
• B
• C
• D

Solve for x by factoring.

• -6, -2
• -2, 6
• 2, 6
• -6, 2

Solve for v by factoring. 
*Remember the equation must equal 0*

• A
• B
• C
• D

Solve for n by factoring.
*Remember the equation must equal 0*

• A
• B
• C
• D

Why are quadratic equations set equal to zero?

• Because zero is an easy number to work with.

• Because we are trying to find the x-intercepts and that happens when y=0.

• Because setting it equal to zero helps us find the y-intercepts.

• None of the above