Question

(9y-5)(9y-5) use suitable property to epan9​

Answer 1

Answer:

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Step-by-step explanation:

$(9y-5)(9y-5) \\ \\ (9y-5) {}^{2} \\ \\ according \: \: to \: \: identity \: \\ (x - y) {}^{2} = x {}^{2} + {y}^{2} - 2xy \\ \\ (9y-5) {}^{2} = {(9y)}^{2} + (5) {}^{2} - 2(9y)(5) \\ \\ (9y-5) {}^{2} =81y {}^{2} + 25 - 90y$