Quadratic Equation and Factoring

Solve by factoring: x² - 9x + 20 = 0

• x = -4 and x = -5

• x = 20 and x = -9

• x = 4 and x = 5

• x = -4 and x = 5

Solve: 2x²-x-15=0

• x= -3 or x= 5/2

• x=3 or x=5/2

• x=3 or x= -5/2

• x= -3 or x= -5/2

Solve the equation 80x²-8x=0

• x=0 and 1/8

• x=1/8 and 1/10

• x=0 and -1/10

• x=0 and 1/10

Which of the following is the result of completing the square of the equation 0=x²+8x-30?

• 46=(x+4)²

• 0=(x+8)²+46

• 0=(x+4)²+46

• 46=(x+9)²

Solving the equation f(x) = x² - 8x + 15 =0, what are the two factors we can create to solve this equation? ​ (a)   .

• (x - 3) and (x - 5)

• (x + 3) and (x + 5)

• (x - 15)

Solve for x by factoring.

• -6, -2

• -2, 6

• 2, 6

• -6, 2

Solve by factoring: x² + 3x - 18 = 0
Put the solutions in order from least to greatest.

{​ (a)   ,​ (b)   }

• -6

• 3

• 6

• -3

• 9

• -2

• -9

• 2

• 18

• -1

Solve each equation by factoring.

• A

• B

• C

• D

Solve by factoring

• -4, 2

• -2, 4

• -16

• -4

Solve by factoring: x² - 5x + 6 = 0
Put the solutions in order from least to greatest.

• -6

• 3

• 6

• -3

• 9

• -2

• -9

• 2

• 18

• -1