a+b= 7
a^2+b^2=85
Find a^3+b^3
Pls can I get a quick and
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Answered by
1
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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3
Hey ur answer is here in the attachment
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