Question

If x + y = 3, x2 + y2 = 5 then, find the value of x3+y3

Answer 1

Step-by-step explanation:

$\huge{\underline{\mathrm{Question}}}$

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If x + y = 3, x2 + y2 = 5 then, find the value of x3+y3

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${x}^{3} + {y}^{3} = (x + y) {}^{3} - 3xy(x + y) \\ \\ = {x}^{3} + {y}^{3} = {(3)}^{3} - 3( - 18)(3) \\ \\ = 27 +162 \\ \\ \\ {x}^{3} + {y}^{3} = 189$

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Answer 2

Step-by-step explanation:

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