A+b= 7 a^2+b^2=85 Find a^3+b^3 Pls can I get a quick and – InterviewSolution

1.	A+b= 7 a^2+b^2=85 Find a^3+b^3 Pls can I get a quick and
Answer» (a+b)² = a²+b²+2ab (7)² = 85 + 2ab 49-85/2 = ab 36/2 = ab 18 = ab a³+b³ = (a+b)(a²-ab+b²) = (7)(85-18) = 7 × 67 =469

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