化简:(1)(3-2)0-(-12)-2(2)(m-3n)-2•(2m-2n-3)-2(3)a-2b2•(-2a2b-2)-2÷(a-4b2)(4)(2m2n-3)3(-mn-2)-2.-数学

题目简介

化简:(1)(3-2)0-(-12)-2(2)(m-3n)-2•(2m-2n-3)-2(3)a-2b2•(-2a2b-2)-2÷(a-4b2)(4)(2m2n-3)3(-mn-2)-2.-数学

题目详情

化简:
(1)(
3
-
2
)
0
-(-
1
2
)
-2

(2)(m-3n)-2•(2m-2n-3-2
(3)a-2b2•(-2a2b-2-2÷(a-4b2
(4)(2m2n-33(-mn-2-2
题型:解答题难度:中档来源:不详

答案

(1)(
3
-
2
)0-(-class="stub"1
2
)-2
=1-4
=-3;

(2)(m-3n)-2•(2m-2n-3)-2
=m6n-2•2-2m4n6
=class="stub"1
4
m6+4n-2+6
=class="stub"1
4
m10n4;

(3)a-2b2•(-2a2b-2)-2÷(a-4b2)
=a-2b2•(-2)-2a-4b4÷(a-4b2)
=class="stub"1
4
a-2-4-(-4)b2+4-2
=class="stub"1
4
a-2b4
=
b4
4a2


(4)(2m2n-3)3(-mn-2)-2
=23m6n-9(-m)-2n4
=8m6-2n-9+4
=8m4n-5
=
8m4
n5

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