if (a+b)=5 and ab=7 Then find the value of a³+b³
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Step-by-step explanation:
a³+b³= (a+b) (a² - ab+b²)
(a+b)²= a²+2ab+b²
= a² + 14 +b²
a²+ b² = -14
-70-7= -77
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