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factorise anis bolynomial(aie + by? - Lave - by)? |
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Answer» (ax + by)^2= a^2x^2+b^2y^2+2(ax)( by); ( ax - by)^2= a^2x^2+b^2y^2-2(ax)( by); ( ax+by)^2-( ax - by)^2 = a^2x^2+b^2x^2+2abxy-a^2x^2-b^2x^2+2axby=4axby=4abxy |
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