Solve Quadratics: Factoring and Graphically Check-in

Which equation matches these solutions? x=5,-7

• (x+5)(x-7)=0
• (x-5)(x+7)=0
• (x+5)(x+7)=0
• (x-5)(x-7)=0

Which of the following is a name for the answer to a quadratic equation? Select all that apply.

• Vertex

• Root

• Zero

• y-intercept

• x - intercept

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form
• Find two numbers which add to make 6 and multiply to make -13
• Make it equal 0 by subtracting 3 on each side
• Type it all in a calculator.

x² + 4x - 32 = 0

• x= -8, 4

• x= 8, -4

• x= -8, -4

• x = -2, 16

x² = 18x - 81

• x= -9

• x= 9

• x= -9, 9

• x = -81, 18

6x² - x - 2 = 0

• x= -2/3, 1/2

• x= 2/3, -1/2

• x= -2/3, -1/2

• x = -4, 3

Solve

3x² + 5x = 12

• x = -4/3, x = 3

• x = 4/3, x = -3

• x = -1, x = 4

• x = 1, x = -4

Which is the correct factoring and solutions?  $2x^2+4x-16=0$  

• 2(x + 4)(x - 2) = 0;   x = -4, 2

• 2(x + 8)(x - 2) = 0;   x = -8, 2

Solve by factoring: 6x² - 15x - 36= 0

• x = -4 and x = -6

• x = 4 and x = -3/2

• x = 4 and x = 6

• x = -4 and x = 3/2