Question

show that:(5x-2y)^2 +(5x+2y)^2 = 50x^2 + 8y^2

Answer 1

Answer:

I have attached the answer...

Kindly be reminded the following identities used to solve the question -

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

$(a - b) {}^{2} = a {}^{2} + b {}^{2} - 2ab$

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