问题描述:
(1)2(4x-0.5) (2)-3(1-6/1x) (3)-x+(2x-2)-(3x+5)
(4)3a²+a²-(2a²-2a)+(3a-a²) (5)(5a+4c+7b)+(5c-3b-6a)
(6)(8xy-x²+y²)-(x²-y²+8xy) (7)(2x²-2/1+3x)-4(x-x²+2/1)
(8)3x²-[7x-(4x-3)-2x²]
(4)3a²+a²-(2a²-2a)+(3a-a²) (5)(5a+4c+7b)+(5c-3b-6a)
(6)(8xy-x²+y²)-(x²-y²+8xy) (7)(2x²-2/1+3x)-4(x-x²+2/1)
(8)3x²-[7x-(4x-3)-2x²]
问题解答:
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