The value of cube root 729x21y51 is
Correct answer: B. 9x7y17
- A. 1x63y115
- B. 9x7y17
- C. 243x7y17
- D. None of these
Explanation
To find the cube root of 729x21y51, apply the cube root to each component separately. The cube root of 729 is 9 because 93 = 729. For the exponents, divide by 3: 21/3 = 7 for x and 51/3 = 17 for y. Therefore, the correct expression is 9x7y17. Options A and C miscalculate the numbers involved, and 'None of these' is incorrect because there is a correct answer provided.
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