Tìm `x` `d)3(4-x)^2-6(4-x)+3=0` `e)(2x-3)^2+2(4x^2-9)+(2x+3)^2=0` `f)(x+1)^3-3(1-x^2)(x+1)+3(1-x^2)(1-x)-(1-x)^3=0`

Tìm `x` `d)3(4-x)^2-6(4-x)+3=0` `e)(2x-3)^2+2(4x^2-9)+(2x+3)^2=0` `f)(x+1)^3-3(1-x^2)(x+1)+3(1-x^2)(1-x)-(1-x)^3=0`
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