1.(3a+b)(2a-5b)-6(a-b)^2
2.(-2a^3 b)^3 *(-5a^2 b)^2
3.ab+ac-a
4.4a^2-b^2+2a-b
5.Решите уравнение:
(a+1)(a-1)*x=a+1
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1.(3a+b)(2a-5b)-6(a-b)^2
2.(-2a^3 b)^3 *(-5a^2 b)^2
3.ab+ac-a
4.4a^2-b^2+2a-b
5.Решите уравнение:
(a+1)(a-1)*x=a+1
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1)6а^2-15ab+2ab-5b^2-6(a^2-2ab+b^2)=6а^2-15ab+2ab-5b^2-6a^2+12ab-6b^2=-ab-11b^2