Ответ:
1) (p+8)^2=p^2+16p+64; (x-9)(x+9)=x^2-81
2)(10x-3y)^2=100x^2-60xy+9y^2; (4m+7n)(7n-4m)= (49n^2-16m^2)
Объяснение:
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Ответ:
1) (p+8)^2=p^2+16p+64; (x-9)(x+9)=x^2-81
2)(10x-3y)^2=100x^2-60xy+9y^2; (4m+7n)(7n-4m)= (49n^2-16m^2)
Объяснение: