x2•x3=______;(-2y2)3=______.
题型:填空题难度:一般来源:不详
x2•x3=______;(-2y2)3=______. |
答案
x2•x3=x2+3=x5;
(-2y2)3=-23y2×3=-8y6. 故答案为:x5,-8y6. |
举一反三
若(a+b-3)2+(a-b+5)2=0,则a2-b2的值是( ) |
(-3x2y3)4•(-xy2)2=______. |
已知a、b满足+(b+6)2=0,则a+b的值为______. |
(-)2002×(1.5)2003=______. |
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