Polynomials and Factoring Unit Review

Find the volume of the rectangular prism with length (x + 2) width (x - 4) and height (2x + 1).  

(HINT: V = lwh)

• x² -8x

• x² -2x -8

• 2x³-3x² -18x-8

• 2x³ -8

Factor by grouping:
5n³-10n²+3n-6

• (5n²+3)(n-2)

• (5n²-3)(n-2)

• (5n³+3)(n-2)

• 10n(n²-6)

What is the Area?

Factor completely: 3x² + 18x +15
Hint: Factor GCF first.

• 3(x² + 6x + 5)

• (x + 5)(x + 1)

• 3(x + 5)(x + 1)

• Prime

• (3a+25)(2a+1)

• -(3a+5)(2a+5)

• -(6a+5)(a+5)

• (6a+5)(a+5)

A house is surrounded by a fenced garden. What is the length of the fence?

• 6x + 6

• 6x + 14

• 3x + 3

• 6x + 2

Put the polynomial in standard form.

• 5x² + 7xy + 8xz - 12y²

• - 12y² + 5x² + 7xy + 8xz

• 5x² - 12y² + 7xy + 8xz

• - 12y² + 7xy + 8xz + 5x²

According to the table, how much more is gas at Citgo Gas than Hess Gas?

• 16x - 19.2

• -16x + 19.2

• -48x² + 150.4x - 90.2

• 8x - 0.8

Write in factored form.

12x + 20

• 2(6x + 10)

• 3(4x + 5)

• 4(3x + 20)

• 4(3x + 5)

Which is the right formula?

• (a - b)(a - b)

• (a + b)(a - b) 

• (a + b)(a + b)

• ax² + bx + c