问题描述:
问几道计算题、
(2/3)^-1+(π-3)^0+(-2)^-2+ |(-2)^3 |
(2X-3Y)(3Y-2X)
(3x-y)^2-(-2x+3)(-2x-3)
4x^2-(-2x+3)(-2x-3)
2x(a-b)-(b-a)
(2/3)^-1+(π-3)^0+(-2)^-2+ |(-2)^3 |
(2X-3Y)(3Y-2X)
(3x-y)^2-(-2x+3)(-2x-3)
4x^2-(-2x+3)(-2x-3)
2x(a-b)-(b-a)
问题解答:
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