Question

evaluate
(7/8x+4/5y)²​

Answer 1

USING IDENTITY; $(a+b)^{2}$=$a^{2}$+$b^{2}$+2ab

($\frac{7x}{8}$+$\frac{4y}{5}$)^2

49x^2/64+16y^2/25+7xy/5

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