问题
填空题
化简
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答案
原式=
-x2+5x x-1 x(2x+4) x(x-1)
=
-x2+5x x-1 2x+4 x-1
=x2+5x-2x-4 x-1
=x2+3x-4 x-1
=(x-1)(x+4) x-1
=x+4．
故答案为：x+4．
搜题请搜索小程序“爱下问搜题”
化简
|
原式=
-x2+5x x-1 x(2x+4) x(x-1)
=
-x2+5x x-1 2x+4 x-1
=x2+5x-2x-4 x-1
=x2+3x-4 x-1
=(x-1)(x+4) x-1
=x+4．
故答案为：x+4．