(1)(-4)2-3-27+|1-3|(2)(-2a2b)2•(6ab)÷(-3b2)(3)(2x-1)(3x+2)-6x(x-2)(4)(3x-y)2-(3x+2y)(3x-2y)-数学

题目简介

(1)(-4)2-3-27+|1-3|(2)(-2a2b)2•(6ab)÷(-3b2)(3)(2x-1)(3x+2)-6x(x-2)(4)(3x-y)2-(3x+2y)(3x-2y)-数学

题目详情

(1)
(-4)2
-
3-27
+|1-
3
|

(2)(-2a2b)2•(6ab)÷(-3b2
(3)(2x-1)(3x+2)-6x(x-2)
(4)(3x-y)2-(3x+2y)(3x-2y)
题型:解答题难度:中档来源:不详

答案

(1)原式=4+3+(
3
-1)
=4+
3
-1
=3+
3


(2)原式=4a4b2•6ab÷(-3b2)
=24a5b3÷(-3b2)
=-8a5b;

(3)原式=6x2+4x-3x-2-(6x2-12x)
=6x2+4x-3x-2-6x2+12x
=-13x-2;

(4)原式=9x2+y2-6xy-(9x2-4y2)
=9x2+y2-6xy-9x2+4y2
=5y2-6xy.

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