Advanced MathEasyVolume of a cube with edge x squared
Advanced Math practice question
A cube has edge length x². Which expression gives the volume of the cube?
- A. x⁶Correct
- B. x⁵
- C. x⁸
- D. 3x²
Answer: A. x⁶
(x²)³ = x^(2·3) = x⁶.
Why the other answers are wrong
- B. x⁵
- x⁵ adds 2 and 3 instead of multiplying.
- C. x⁸
- x⁸ is 2³, cubing the exponent instead of multiplying by 3.
- D. 3x²
- 3x² is three edges added, not multiplied.
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