(2)(x-1)²-(x-1)-6=0 (3)4x²-4√2x+1=0 (4)(3x-4)²=9x(2)(x-1)²-(x-1)-6=0 (3)4x²-4√2x+1=0 (4)(3x-4)²=9x-12
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/21 11:43:18
![(2)(x-1)²-(x-1)-6=0 (3)4x²-4√2x+1=0 (4)(3x-4)²=9x(2)(x-1)²-(x-1)-6=0 (3)4x²-4√2x+1=0 (4)(3x-4)²=9x-12](/uploads/image/z/1644623-71-3.jpg?t=%EF%BC%882%EF%BC%89%EF%BC%88x%EF%BC%8D1%EF%BC%89%26%23178%3B%EF%BC%8D%EF%BC%88x%EF%BC%8D1%EF%BC%89%EF%BC%8D6%3D0+%EF%BC%883%EF%BC%894x%26%23178%3B%EF%BC%8D4%E2%88%9A2x%2B1%3D0+%EF%BC%884%EF%BC%89%EF%BC%883x%EF%BC%8D4%EF%BC%89%26%23178%3B%3D9x%EF%BC%882%EF%BC%89%EF%BC%88x%EF%BC%8D1%EF%BC%89%26%23178%3B%EF%BC%8D%EF%BC%88x%EF%BC%8D1%EF%BC%89%EF%BC%8D6%3D0+%EF%BC%883%EF%BC%894x%26%23178%3B%EF%BC%8D4%E2%88%9A2x%2B1%3D0+%EF%BC%884%EF%BC%89%EF%BC%883x%EF%BC%8D4%EF%BC%89%26%23178%3B%3D9x%EF%BC%8D12)
(2)(x-1)²-(x-1)-6=0 (3)4x²-4√2x+1=0 (4)(3x-4)²=9x(2)(x-1)²-(x-1)-6=0 (3)4x²-4√2x+1=0 (4)(3x-4)²=9x-12
(2)(x-1)²-(x-1)-6=0 (3)4x²-4√2x+1=0 (4)(3x-4)²=9x
(2)(x-1)²-(x-1)-6=0 (3)4x²-4√2x+1=0 (4)(3x-4)²=9x-12
(2)(x-1)²-(x-1)-6=0 (3)4x²-4√2x+1=0 (4)(3x-4)²=9x(2)(x-1)²-(x-1)-6=0 (3)4x²-4√2x+1=0 (4)(3x-4)²=9x-12
(x-1)²-(x-1)-6=0
((x-1)-3)((x-1)+2)=0
∴x-1=3,x1=4;x-1=-2,x=-1.
4x²-4√2x+1=0
4x²-4√2x+2=1
(2x-√2)²=1
2x-√2=±1
∴2x-√2=1,x1=(1+√2)/2;2x-√2=-1,x2=(√2-1)/2
(3x-4)²=9x-12
9x²-24x+16=9x-12
9x²-33x+28=0
(3x-4)(3x-7)=0
∴3x-4=0,x1=4/3;3x-7=0,x2=7/3