Question

plzz ans soon as soon as possible

Answer 1

I hope it will help you

Answer 2

given:(a+b)=10, a²+b²=58
then a³+b³=?
sol:- (a³+b³)=(a+b)(a²-ab+b²)
(a³+b³)=10(58-ab).......(i)

(a+b)²=a²+2ab+b²
(a+b)²=58+2ab
(10)²=58+2ab
-2ab=100-58
-ab=42÷2
-ab=21
now putting the value of '-an ' in equation 1st
(a³+b³)=10(58-21)
(a³+b³)=10(37)
a³+b³=370 ans.