Question Details

Detailed explanation and options for the selected question.

If x + y = 10 and xy = 21, what is the value of x³ + y³?

A. 651
B. 781
C. 861
D. 931

Explanation:

Using x³+y³ = (x+y)(x² - xy + y²), substitute values to find x³+y³ = 861. Other options are incorrect.

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