(4x+7y)²-(4x-7y)²=112xy
step by step please
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Answered by
18
see the photo... i think... it's easy.
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mithleshemant:
u have to verify the answer
and it is verified in my case as well as your case
plz just so the step how 56xy is to clarify
in my answer 56xy is not coming as a step
I have used another method through whoch I got the answer directly
than tell me that way only i just wanted to understand it
which number bring 56
(a+b) ka whole square = a square + b square + 2ab
let 4x = a and 7y = b
ya u are right
Answered by
5
here it is You just need to apply a simple identity
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