Factoring, Solving Quadratics

Factor completely: -3x²-24x-21

• (3x-3)(x-7)

• (x-7)(x-1)

• -3(x+7)(x+1)

• (x+21)(x+1)

Find the solutions to this equation.

5x ( 7x - 3 ) = 0

• x = 0 and x = 3 / 7

• x = 0 and x = - 3 / 7

• x = 0 and x = 7 / 3

• x = -5 and x = 3 / 7

Tags

CCSS.HSA-REI.B.4B

What are the x- intercepts?

• x= 0 and x= -4

• x= 0 and x= 4

• y= 0

• x= 2

Tags

CCSS.HSA.APR.B.3

Solve by factoring or completing the square (your choice):

x² + 2x - 20 = 4

• x = -6, x = 4

• x = 6, x = -4

• x = 12, x = -2

• x = 8, x = -3

Tags

CCSS.HSA-REI.B.4B

Factor the trinomial into 2 sets of ( )( ):

x² - 5x - 36

• (x - 4)(x + 9)

• (x - 6)(x + 6)

• (x + 4)(x - 9)

• (x -12)(x + 3)

Factor the trinomial: x² + 0x - 144

(or could be written as x² - 144)

• (x + 12)²

• (x - 12)(x + 12)

• (x - 12)²

• 12²

Tags

CCSS.HSA.APR.C.4

Solve by taking square roots: (x-5)² = 25

• ±0

• ±10

• 10, 0

• -10, 0

Tags

CCSS.HSA-REI.B.4B

Solve by taking square roots:

3 (x - 2)² + 4 = 79

• x = 3, x = 7

• x = -3, x = 7

Tags

CCSS.HSA-REI.B.4B

Given the equation, that number would you need to add to "complete the square?" x² + 12x + ___ = -9 + ___

• 9

• 3

• 6

• 12

Tags

CCSS.HSA-REI.B.4B

Given the quadratic equation:  x² + 4x - 40 = -8
Find a=____ b=____ and c= ____

• -10 & -4

• -4 & 10

• -8 & 4

• 8 & -4