Упростите рациональное выражение:
[tex]( \frac{a+b}{a-b} - \frac{a-b}{a+b} ) [/tex] × [tex] \frac{ a^{2} - b^{2} }{2ab} [/tex]
[tex]( \frac{a+b}{a-b} - \frac{a-b}{a+b} ) [/tex] × [tex] \frac{ a^{2} - b^{2} }{2ab} [/tex]
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4ав/(а²-в²) × (а²-в²)/2ав=2