giai phuong trinh :1, x^3 + x^2 + x + 12, (x-1)(5x+3)=(3x-8)(x-1)3, 3x(25x+15)-35(5x+3)=04, (2-3x)(x+11)=(3x-2)(2-5x)5, (2x-1)^2+(2-x)(2x-1)=06, (x+2)(3-4x)=x^2+4x+4giai ho em bai nay voi
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