计算化简:(1)|-4|+(-1)2009-(12)-2+(π)0(2)(x+1-15x-1)÷x-4x-1.-数学

题目简介

计算化简:(1)|-4|+(-1)2009-(12)-2+(π)0(2)(x+1-15x-1)÷x-4x-1.-数学

题目详情

计算化简:
(1)|-4|+(-1)2009-(
1
2
)-2+(
π
)0

(2)(x+1-
15
x-1
x-4
x-1
题型:解答题难度:中档来源:不详

答案

(1)原式=4-1-4+1…(3分)
=0;…(5分)

(2)原式=(
x2-1
x-1
-class="stub"15
x-1
)•class="stub"x-1
x-4

=
x2-16
x-1
•class="stub"x-1
x-4
…(3分)

=
(x+4)(x-4)
x-1
•class="stub"x-1
x-4
…(4分)

=x+4.…(5分)

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