Algebra CA 6 Test Review

Which expression is equivalent to

(4x³-5x²+3x)+(-2x³-x²+6x)?

• 2x³-6x²-9x

• 2x³+6x²+9x

• -2x³-6x²+9x

• 2x³-6x²+9x

• None of these

Which expression is equivalent to

(x-3) (x²+2x+7)?

• x³-x²+x-21

• x³+5x+13x-21

• x³-3x²+7x-21

• x²+2x-3

What is the area of a rectangle that has a length of 2x - 4 and a width of 3x + 5?

• 6x² + 2x - 20

• 6x² + 2x + 20

• 6x² - 2x - 20

• 6x² - 2x + 20

Which expression is equivalent to 10x³ - 15x?

• x(10x² - 15)

• 5x(2x² - 3)

• 5(2x³ - 3x)

• 5x²(10x - 3)

Which expression is equivalent to

f(x) = 3x²+9x-30?

• (x - 2) (x + 5)

• (x + 2) (x - 5)

• (x + 2) (x - 5)

• (x - 2) (x - 5)

Factor Completely:

x² - 36

• (x + 9)(x - 4)

• (x - 6)(x - 6)

• (x - 9)(x + 4)

• (x + 6)(x - 6)

Which is equivalent to

x² - 5x - 14?

• (x - 2)(x + 3)

• (x - 2)(x + 7)

• (x + 2)(x - 7)

• (x - 2)(x - 3)

When multiplying two powers that have the same base, you can ___________ the exponents.

• Subtract

• Divide

• Add

• Multiply

x⁴ (x¹²)²

• x¹⁶

• x⁴⁸

• x²⁸

• x⁸

Which of the following is the equivalent expression for this expression above?

• -9b²

• 9b²

• -9a

• 9ab