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(1/x^3-1x^2)*(x^3/x-1)(x/2-x)-(4-x^2/x^+4x+4)
题目详情
(1/x^3-1x^2)*(x^3/x-1)
(x/2-x)-(4-x^2/x^+4x+4)
(x/2-x)-(4-x^2/x^+4x+4)
▼优质解答
答案和解析
(1/x^3-1/x^2)[x^3/(x-1)]
=(1-x)[1/(x-1)]
=-1
x/(2-x)-(4-x^2)/(x^+4x+4)
=x/(2-x)-(2-x)/(x+2)
=x^2+2x-4-x^2+4x
=6x-4
=(1-x)[1/(x-1)]
=-1
x/(2-x)-(4-x^2)/(x^+4x+4)
=x/(2-x)-(2-x)/(x+2)
=x^2+2x-4-x^2+4x
=6x-4
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