4 (x-y)^2-12 (x-y)(x+y)+9 (x+y)^2
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helpinghand24:
at the end why did u multiplied the equation with negative?
Is my answer correct?
Since both the terms are negative it doesn't matter
okay thanx
When we square it, the negatives will get positive and also when we multiply two negatives the answer will be positive
ok
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Answer:(x + 5y)^2
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