Question

(2X-1）²(3x+2)-(2x-1)(3x+2)²-x(1-2x)(3x+2),其中x=1.5

麻烦快些
，。。。。。

Answer 1

(2x-1)²(3x+2)-(2x-1)(3x+2)²-x(1-2x)(3x+2)
=(2x-1)²(3x+2)-(2x-1)(3x+2)²+x(2x-1)(3x+2)
=(2x-1)(3x+2)[(2x-1)-(3x+2)+x]
=-3(2x-1)(3x+2)
=-3(2*1.5-1)(3*1.5+2)
=-3*2*6.5
=-39

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Answer 2

（2x-1)[(2x-1)(3x+2)-(3x+2)^2+x(3x+2)]
=(2x-1)(3x+2)[(2x-1)-(3x+2)+x]
=2*6.5*(-3)
=-39

Answer 3

每一项都有(2X-1）(3x+2)，把它提出来
原式=(2x-1)(3x+2)[2x-1-3x-2+x]
=-3(2x-1)(3x+2)

Answer 4

(2X-1）²(3x+2)-(2x-1)(3x+2)²-x(1-2x)(3x+2)

=(2X-1）(3x+2)[(2X-1）-(3x+2)+x]
=-3(2X-1）(3x+2)
=-3*2*6.5
=-39

Answer 5

(2X-1）²(3x+2)-(2x-1)(3x+2)²-x(1-2x)(3x+2)
=(2x-1)(3x+2)(2x-1-3x-2+x)
=2*2.5*(-3)
=-15