Question

What should be subtracted from −7mn + 2m2 + 3n2 to get m2 + 2mn + n2?

Answer 1

Answer:

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First we should add two equations

(-7mn+2m2+3n2) + (m2+2mn+n2)

Answer 2

Answer:

m²+4n²-5mn

Step-by-step explanation:

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