Question

if x squared plus y squared equal to 29 and x y equal to 10 find the values of x cube minus y que when X greater than y

Answer 1

${x}^{3} - {y}^{3} = ({x - y}) \: \: ( { {x}^{2} + {y}^{2} + xy}) \\ = (x - y) \: (29 + 10) \\ = 39 \times( x - y) \\ = 39(x - y)$
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