factorize 3(x-y)²+4(x-y) -15
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Answer:
=3x^2 +3y^2-6xy +4x-4y-15
Step-by-step explanation:
=3(x^2+y^2-2xy)+4x-4y-15
=3x^2 +3y^2-6xy +4x-4y-15
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