Question

if a+b=10 and ab=2 find a³+b³​

Answer 1

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$\huge10 {a}^{3} - 20 + 10{b}^{3}$

Step-by-step explanation:

${a}^{3} + {b}^{3} = ( a+ b) \times ( {a}^{2} - ab + {b}^{2} ) \\ {a}^{3} + {b}^{3} = (10) \times ({a}^{3} - 2 + {b}^{3}) \\ {a}^{3} + {b}^{3} = 10 {a}^{3} - 20 + 10{b}^{3}$

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