Question

evaluate 》 4x square + 5y square

Answer 1

Hello

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4x²+5y²

Note:- a²+b²

(a+b)²-2ab

============================

(4x+5y)²-2.4x.5y

16x²+25y²+2.4x.5y-2.4x.5y

Here..

cancelled (2.4x.5y)

16x²+25y²

Thanks!!!