Сократите дробь (m-n)^2/(n^2-m^2)

Question

Сократите дробь (m-n)^2/(n^2-m^2)

Answer 1

(m-n)²/(n²-m²)=(n-m)²/[(n-m)(n+m)]=(n-m)/(n+m)

Comments

минус же забыла

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(m-n)²/(n²-m²)=-(n-m)²/[(n-m)(n+m)]=-(n-m)/(n+m)

Answer 2

Решите задачу: