Advanced MathMediumFractional exponent raised to a power
Advanced Math practice question
For x > 0, which expression is equivalent to (x^(1/3))⁶?
- A. x²Correct
- B. x³
- C. x^(1/2)
- D. x¹⁸
Answer: A. x²
A power of a power multiplies the exponents: (1/3) × 6 = 2. So (x^(1/3))⁶ = x².
Why the other answers are wrong
- B. x³
- x³ would come from 6/2; the exponent is 6 × 1/3 = 2.
- C. x^(1/2)
- x^(1/2) comes from 1/3 + ... or dividing; multiply the exponents: 6 × 1/3.
- D. x¹⁸
- x¹⁸ divides 6 by 1/3 instead of multiplying by it.
More Advanced Math questions
- Medium
What are the solutions to x² − 5x + 6 = 0? - Medium
The graph of f(x) = (x − 3)² + 4 is a parabola. What are the coordinates of its vertex? - Medium
If x² − 2x − 8 = (x + 2)(x − a), what is the value of a? - Medium
If √(x + 5) = 4, what is the value of x? - Medium
If f(x) = x + 3 and g(x) = 2x, what is f(g(4))? - Medium
What are the solutions to x² + 6x + 8 = 0?
Not affiliated with the College Board. SAT is a trademark of the College Board.