3х^2-(3x+2)(x-1)=8
3x^2-(3x^2-3x+2x-2)=8
3x^2-3x^2+3x-2x+2=8
x+2=8
x=6
б) (3x-2)(2x+3)-6x^2-85)=99
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3х^2-(3x+2)(x-1)=8
3x^2-(3x^2-3x+2x-2)=8
3x^2-3x^2+3x-2x+2=8
x+2=8
x=6
б) (3x-2)(2x+3)-6x^2-85)=99