Question

(ax+by)2 +(by-av)2
$(ax + by) { }^{2} + (by - ay) {}^{2}$
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Answer 1

Explanation:

a^2x^2 +b^2y^2+2axby.+b^2y^2+ a^2y^2 -2aby^2

2b^2y^2+a^2x^2 +2axby.+ a^2y^2 -2aby^2