Algebra II I'm Working Backwards

Which of the following is the factored   form of x³ – 125?

• (x - 5)³
• (x - 5)(x² + 25)
• (x - 5)(x² + 5x + 25)
• (x - 5)(x² - 5x + 25)

What is the solution set to x² = 2x – 5?

• {±i}
• {2 ± 2i}
• {1 ± 2i}
• {1, 2}

Which is a factor of 3x² + 10x – 8 = 0?

• (x - 4)
• (2x - 3)
• (x + 6)
• (3x - 2)

Factor and cancel out in order to simplify.

• 1/(n-7)

• n-7

• (n-6)/(n-7)

• n-6

Simplify the rational function

• 1/(3x)

• 3x(x + 1)

• 3x

• (x + 1)

Divide

• A
• B
• C
• D

Solve

• A
• B
• C
• D

• x = 49
• x = 53
• x = 45
• x = 18

• 36
• 18
• -18
• 27

• x = 2
• x = 4
• x = 7
• x = 9