if a - b = 7 , a×b = 9 find a^2 + b^2
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hey mate :-
given here
a-b= 7
ab = 9
find here
a²+b²=?
we know that,
x²+y²=(x-y)²+2xy
so,
a²+b²=(a-b)²-+ab
put value by (1) and (2),
we get
a²+b2=(7)²+2×9
= 49 +18
= 67
i hopes its helps y
@Abhi.❤❤
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