if a-b=7 , ab=18. find a+b
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SwetaSweta11111:
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(a-b)²=a²+b²-2ab
7² =a²+b²-2*18
49 =a²+b²-36
49+36=a²+b²
85=a²+b²
(a+b)²=a²+b²+2ab
( a+b)²=85+36
= 121
(a+b) =√121
=11
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7² =a²+b²-2*18
49 =a²+b²-36
49+36=a²+b²
85=a²+b²
(a+b)²=a²+b²+2ab
( a+b)²=85+36
= 121
(a+b) =√121
=11
HOPE IF MY ANSWER HELPED YOU THEN MAKE IT A BRAINLIAST ANSWER
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