12. 18. Решите уравнение, используя разложение на множители
1) (2.x - 9)(x + 6) - x(x + 6) = 0;
2) (8x+ 4)(x - 10) + (10 - x)(x - 8) = 0;
1) (2.x - 9)(x + 6) - x(x + 6) = 0;
2) (8x+ 4)(x - 10) + (10 - x)(x - 8) = 0;
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(x+6)(2x-9-x)=0
(X+6)(x-9)=0
(x+6)(x-9)=0
x+6=0 x-9=0
x1=-6 x2=9