(A-b)^2 • (x-y)(x+y)
________________=(a-b)(x-y)
(X+y) • (a-b)
Ответ:
Объяснение:
9а² -18а⁷ = 9а² (1 - 2а⁵)
1.(a+b)^2 =a^2+2ab+b<span>^2
2.(a-b)</span>^2 =a^2-2ab+b<span>^2
3.(a+b)(a-b) =a</span>^2-b<span>^2
4.(a+b)(a</span>^2-ab+b^2) =a^3+b<span>^3
5.</span>(a-b)(a^2+ab+b^2) =a^3-b^3
6.(a+b)^3 =a^3+3a^2b+3ab^2+b^3
7.(a-b)^3 =a^3-3a^2b+3ab^2-b^3
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