Question

the value of x³+y³,when x+y=5 and xy=6is
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Answer 1

${(x + y)}^{3} = {x}^{3} + {y}^{3} + 3xy(x + y) \\ {(5)}^{3} = {x}^{3} + {y}^{3} + 3 \times 6(5) \\ 125 = {x}^{3} + {y}^{3} + 90 \\ 35 = {x}^{3} + {y}^{3}$