(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
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/08 07:08:48
![(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](/uploads/image/z/3032435-11-5.jpg?t=%EF%BC%881%EF%BC%892%EF%BC%884x-0.5%EF%BC%89+%EF%BC%882%EF%BC%89-3%EF%BC%881-6%EF%BC%8F1x%EF%BC%89+%EF%BC%883%EF%BC%89-x%2B%EF%BC%882x-2%EF%BC%89-%EF%BC%883x%2B5%EF%BC%89%EF%BC%884%EF%BC%893a%26sup2%3B%2Ba%26sup2%3B-%EF%BC%882a%26sup2%3B-2a%EF%BC%89%2B%EF%BC%883a-a%26sup2%3B%EF%BC%89+%EF%BC%885%EF%BC%89%EF%BC%885a%2B4c%2B7b%EF%BC%89%2B%EF%BC%885c-3b-6a%EF%BC%89%EF%BC%886%EF%BC%89%EF%BC%888xy-x%26sup2%3B%2By%26sup2%3B%EF%BC%89-%EF%BC%88x%26sup2%3B-y%26sup2%3B%2B8xy%EF%BC%89+%EF%BC%887%EF%BC%89%EF%BC%882x%26sup2%3B-2)
(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)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]
(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)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+4c+7b)+(5c-3b-6a)=-a+4b+c
(6)(8xy-x²+y²)-(x²-y²+8xy)=-2x²+2y²
(7)(2x²-2/1+3x)-4(x-x²+2/1)=2x²-2+3x-4x+4x²-8=6x²-x-10
(8)3x²-[7x-(4x-3)-2x²] =3x²-(3x+3-2x²)=5x²-3x-3