Advanced Math practice question

Answer: A. x²

x² + 3x − 3x = x².

Why the other answers are wrong

B. x² + 6x

Adds 3x instead of subtracting.

C. 0

The x² term does not cancel.

D. 6x

Loses the x² term and doubles 3x.

More Advanced Math questions

• Easy–Medium
  If f(x) = 2x² − 3, what is f(4)?
• Easy–Medium
  Which expression is equivalent to (2x³)(3x⁴)?
• Easy–Medium
  What are the solutions to x² − 16 = 0?
• Easy–Medium
  Which expression is equivalent to (x + 5)²?
• Easy–Medium
  For x ≠ 0, which expression is equivalent to (x² + 3x) / x?
• Easy–Medium
  What are the solutions to the equation 2(x − 3)² − 32 = 0 ?