помогите плиз!!!1)-12a^2+18a^3
2)2a+4b-ab-2b^2
3)x^2-64y^2
4)-2x^3-28x^2-98x
5)(x-4)^2-25равно 0
6)99^3-61^3 +99*61
38
2)2a+4b-ab-2b^2
3)x^2-64y^2
4)-2x^3-28x^2-98x
5)(x-4)^2-25равно 0
6)99^3-61^3 +99*61
38
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Answers & Comments
2)a(2-b)+2b(2-b)=(2-b)(a+2b);
3)(x-8у)(х+8у);
4)-2х(х+7)^2;
5)(х-4-5)(х-4+5)=0;
х=9;х=-1