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(1)(-a2)3(2)(a2b)5(3)(-pq)3(4)(-anbn+1)4(5)-[(m-n)3]x(6)(-a)5÷(-a)(7)(-xy)5÷(-xy)2(8)(-x)2•x3•(-2y)3+(-2xy)2•(-x)3y(9)3x3•x9+x2•x10-2x•x3•x8(10
题目详情
(1)(-a2)3
(2)(a2b)5
(3)(-pq)3
(4)(-anbn+1)4
(5)-[(m-n)3]x
(6)(-a)5÷(-a)
(7)(-xy)5÷(-xy)2
(8)(-x)2•x3•(-2y)3+(-2xy)2•(-x)3y
(9)3x3•x9+x2•x10-2x•x3•x8
(10)32×3×27-3×81×3
(11)2x5•x5+(-x)2•x•(-x)7
(12)(n-m)3•(m-n)2-(m-n)5.
(2)(a2b)5
(3)(-pq)3
(4)(-anbn+1)4
(5)-[(m-n)3]x
(6)(-a)5÷(-a)
(7)(-xy)5÷(-xy)2
(8)(-x)2•x3•(-2y)3+(-2xy)2•(-x)3y
(9)3x3•x9+x2•x10-2x•x3•x8
(10)32×3×27-3×81×3
(11)2x5•x5+(-x)2•x•(-x)7
(12)(n-m)3•(m-n)2-(m-n)5.
▼优质解答
答案和解析
(1)(-a2)3=-a6;
(2)(a2b)5=a10b5;
(3)(-pq)3=-p3q3;
(4)(-anbn+1)4=a4nb4n+4;
(5)-[(m-n)3]x=-(m-n)3x;
(6)(-a)5÷(-a)=(-a)5-1=a4;
(7)(-xy)5÷(-xy)2=(-xy)5-2=-x3y3;
(8)(-x)2•x3•(-2y)3+(-2xy)2•(-x)3y,
=x2•x3•(-8y3)+4x2y2•(-x3y),
=-8x5y3-4x5y3,
=-12x5y3;
(9)3x3•x9+x2•x10-2x•x3•x8,
=3x12+x12-2x12,
=(3+1-2)x12,
=2x12;
(10)32×3×27-3×81×3,
=32×3×33-3×34×3,
=36-36,
=0;
(11)2x5•x5+(-x)2•x•(-x)7,
=2x10-x10,
=x10;
(12)(n-m)3•(m-n)2-(m-n)5,
=-(m-n)5-(m-n)5,
=-2(m-n)5.
(2)(a2b)5=a10b5;
(3)(-pq)3=-p3q3;
(4)(-anbn+1)4=a4nb4n+4;
(5)-[(m-n)3]x=-(m-n)3x;
(6)(-a)5÷(-a)=(-a)5-1=a4;
(7)(-xy)5÷(-xy)2=(-xy)5-2=-x3y3;
(8)(-x)2•x3•(-2y)3+(-2xy)2•(-x)3y,
=x2•x3•(-8y3)+4x2y2•(-x3y),
=-8x5y3-4x5y3,
=-12x5y3;
(9)3x3•x9+x2•x10-2x•x3•x8,
=3x12+x12-2x12,
=(3+1-2)x12,
=2x12;
(10)32×3×27-3×81×3,
=32×3×33-3×34×3,
=36-36,
=0;
(11)2x5•x5+(-x)2•x•(-x)7,
=2x10-x10,
=x10;
(12)(n-m)3•(m-n)2-(m-n)5,
=-(m-n)5-(m-n)5,
=-2(m-n)5.
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