find the question no. 7
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krishpriya:
tq so much
no problem
I think so that the pic is clear enough
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(a + b + c)² = a²+ b² + c² + 2 a b + 2 b c + 2 ca
(15)²=a²+b²+c²+2(ab+bc+ca)
225=a²+b²+c²+2(25)
225=a²+b²+c²+50
225-50= a²+b²+c²
175=a²+b²+c²
Hope it will help you......
please mark as brainlist if it helps you......
(15)²=a²+b²+c²+2(ab+bc+ca)
225=a²+b²+c²+2(25)
225=a²+b²+c²+50
225-50= a²+b²+c²
175=a²+b²+c²
Hope it will help you......
please mark as brainlist if it helps you......
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