Math, asked by gokulrajasekaran2007, 9 months ago

please help me in solving this question

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Answered by manusrir33

1

This is your answer:

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Answered by chinthanaiselvan

1

Answer:

x^2+y^2+14xy

Step-by-step explanation:

4 (x^2+y^2-2xy) - 12 (x^2-y^2)+ 9 (x^2+y^2+2xy)

4x^2+4y^2-4xy - 12x^2 - 12y^2 + 9x^2+9y^2+18xy

x^2+y^2+14xy

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