解方程:(1)x²-6x+9=0 (2(x-3)(-x-3)-(x-2)²+2x(x-3)=5
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![解方程:(1)x²-6x+9=0 (2(x-3)(-x-3)-(x-2)²+2x(x-3)=5](/uploads/image/z/1123805-29-5.jpg?t=%E8%A7%A3%E6%96%B9%E7%A8%8B%EF%BC%9A%EF%BC%881%EF%BC%89x%26%23178%3B-6x%2B9%3D0+%EF%BC%882%EF%BC%88x-3%EF%BC%89%EF%BC%88-x-3%EF%BC%89-%EF%BC%88x-2%EF%BC%89%26%23178%3B%2B2x%EF%BC%88x-3%EF%BC%89%3D5)
解方程:(1)x²-6x+9=0 (2(x-3)(-x-3)-(x-2)²+2x(x-3)=5
解方程:(1)x²-6x+9=0 (2(x-3)(-x-3)-(x-2)²+2x(x-3)=5
解方程:(1)x²-6x+9=0 (2(x-3)(-x-3)-(x-2)²+2x(x-3)=5
(1)x²-6x+9=0
(x-3)(x-3)=0
x=3
(2)(x-3)(-x-3)-(x-2)²+2x(x-3)=5
-x²-3x+3x+9-(x²-4x+4)+2x²-6x=5
-x²+9-x²+4x-4+2x²-6x=5
-2x=-5+5
-2x=0
x=0
x²-6x+9=0
(x-3)²=0,x=3