Advanced Math practice question

Answer: 4

Raise both sides to the power 2/3: x = 8^(2/3) = (∛8)² = 4.

Common wrong answers

If you answered 2

2 is ∛8, one step short.

If you answered 12

12 is 8 × 3/2.

If you answered 16

16 is 8^(4/3), using the wrong reciprocal.

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 ?