Polynomial Equations and Factoring

Factor completely:

3x² + 18x +15

• 3(x² + 6x + 5)

• (x + 5)(x + 1)

• 3(x + 5)(x + 1)

• None of the above

Factor by grouping:
x³+7x²-2x-14

• (x²-2)(x-7)

• (x²+2)(x-7)

• (x²+2)(x+7)

• (x²-2)(x+7)

30x³+15x²-18x-9

• (5x²-3)(6x+1)

• (5x²-3)(6x+3)

• 3(5x²+3)(2x-1)

• 3(5x²-3)(2x+1)

Solve x² + x – 72 = 0.

• x = -8

• x = -8 or x = 9

• x = 8 or x = -9

• x = 9

Tags

CCSS.HSA-REI.B.4B

Tags

CCSS.HSA-REI.B.4B

Tags

CCSS.HSF-IF.C.7C

If a = 4x and b = 5, write a SUM of Cubes Problem that would need to then be factored.

Mathematical Equivalence

ON

Tags

CCSS.HSA.APR.C.4

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

Tags

CCSS.HSA-REI.B.4B

Tags

CCSS.HSA.APR.A.1

• Nothing: she found the difference correctly.

• The x^2 coefficient should be 7 and the x coefficient should be 3.
  

• The x^2 coefficient should be 7 and the x coefficient should be -5.
  

• The x^2 coefficient should be 3.
  

Tags

CCSS.HSA.APR.A.1