Автор - mymy04

(2x-3)(x+3)-x(2-x)=0

Ответ

Автор - zazugu
2x²+6x-3x-9-2x+x²=0
3x²+x-9=0
D=b²-4ac
D=1+108
D=109
x=-b-+√D:2a
x1=-1-√109:6
x2=-1+√109:6

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