Question

Упростите выражение:по действиям

Answer 1

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Answer 2

$(\frac{a^{2}+b^{2}}{2ab}-1)*\frac{2ab}{a-b}$

1) $\frac{a^{2}+b^{2}}{2ab}-1=\frac{a^{2}+b^{2}-2ab}{2ab}=\frac{(a+b)^{2}}{2ab}$

2) $\frac{(a-b)^{2}}{2ab}*\frac{2ab}{a-b}=\frac{(a-b)^{2}*2ab}{2ab*(a-b)}=a-b$