Объяснение:
Б)
(9р^2-q^2)/(9p^2+6pq+q^2)=
=(3p-q)(3p+q) / (3p+q)^2=(3p-q) / (3p+q)
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Объяснение:
Б)
(9р^2-q^2)/(9p^2+6pq+q^2)=
=(3p-q)(3p+q) / (3p+q)^2=(3p-q) / (3p+q)