(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]
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]
答
(1)2(4x-0.5)=8x-1(2)-3(1-6/1x)=-3+18/1x(3)-x+(2x-2)-(3x+5)=-x+2x-2-3x-15=-2x-13(4)3a²+a²-(2a²-2a)+(3a-a²)=4a²-2a²+2a+3a-a²=a²+5a (5)(5a+...