Ответ:
p²-p²/q²=p²(1-1/q²)
Объяснение:
(p+p/q)(p-p/q)=p*p+p/q*p-p*p/q-p/q*p/q=p²+p²/q-p²/q-p²/q²=p²-p²/q²
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Ответ:
p²-p²/q²=p²(1-1/q²)
Объяснение:
(p+p/q)(p-p/q)=p*p+p/q*p-p*p/q-p/q*p/q=p²+p²/q-p²/q-p²/q²=p²-p²/q²