Advanced MathEasySquare root of a perfect-square monomial
Advanced Math practice question
For x > 0, which of the following is equivalent to √(16x²)?
- A. 4xCorrect
- B. 8x
- C. 4x²
- D. 16x
Answer: A. 4x
√16 = 4 and √(x²) = x for positive x.
Why the other answers are wrong
- B. 8x
- 8 is half of 16, not its square root.
- C. 4x²
- The square root of x² is x.
- D. 16x
- The square root of 16 is 4.
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