1.2008^2 -2007×2009 2.(x+3)^2-(x-1)(x-2) 3.(x ^2y) ^3·(-2y ^2)^2÷(2x^2)1.2008^2 -2007×2009 2.(x+3)^2-(x-1)(x-2) 3.(x ^2y) ^3·(-2y ^2)^2÷(2x^2)
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/25 20:49:57
![1.2008^2 -2007×2009 2.(x+3)^2-(x-1)(x-2) 3.(x ^2y) ^3·(-2y ^2)^2÷(2x^2)1.2008^2 -2007×2009 2.(x+3)^2-(x-1)(x-2) 3.(x ^2y) ^3·(-2y ^2)^2÷(2x^2)](/uploads/image/z/3006203-59-3.jpg?t=1.2008%5E2+-2007%C3%972009+2.%EF%BC%88x%2B3%EF%BC%89%5E2-%EF%BC%88x-1%EF%BC%89%EF%BC%88x-2%EF%BC%89+3.%EF%BC%88x+%5E2y%EF%BC%89+%5E3%C2%B7%EF%BC%88-2y+%5E2%29%5E2%C3%B7%EF%BC%882x%5E2%EF%BC%891.2008%5E2+-2007%C3%972009+2.%EF%BC%88x%2B3%EF%BC%89%5E2-%EF%BC%88x-1%EF%BC%89%EF%BC%88x-2%EF%BC%89+3.%EF%BC%88x+%5E2y%EF%BC%89+%5E3%C2%B7%EF%BC%88-2y+%5E2%29%5E2%C3%B7%EF%BC%882x%5E2%EF%BC%89)
1.2008^2 -2007×2009 2.(x+3)^2-(x-1)(x-2) 3.(x ^2y) ^3·(-2y ^2)^2÷(2x^2)1.2008^2 -2007×2009 2.(x+3)^2-(x-1)(x-2) 3.(x ^2y) ^3·(-2y ^2)^2÷(2x^2)
1.2008^2 -2007×2009 2.(x+3)^2-(x-1)(x-2) 3.(x ^2y) ^3·(-2y ^2)^2÷(2x^2)
1.2008^2 -2007×2009 2.(x+3)^2-(x-1)(x-2) 3.(x ^2y) ^3·(-2y ^2)^2÷(2x^2)
1.2008^2 -2007×2009 2.(x+3)^2-(x-1)(x-2) 3.(x ^2y) ^3·(-2y ^2)^2÷(2x^2)1.2008^2 -2007×2009 2.(x+3)^2-(x-1)(x-2) 3.(x ^2y) ^3·(-2y ^2)^2÷(2x^2)
2008^2 -2007×2009=2008^2 -(2008-1)×(2008+1)=2008^2 -(2008^2 -1)=1
(x+3)^2-(x-1)(x-2)=x^2+6x+9-(x^2-3x+2)=9x+7
(x ^2y) ^3·(-2y ^2)^2÷(2x^2)=2x^4y^7