解方程:(x-2)²-(x+3)(x-3)=4x-1
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解方程:(x-2)²-(x+3)(x-3)=4x-1
解方程:(x-2)²-(x+3)(x-3)=4x-1
解方程:(x-2)²-(x+3)(x-3)=4x-1
展开:
x²-4x+4-x²+9=4x-1
-8x=-14
x=7/4
x^2-4x+4-x^2+9=4x-1
-4x+13=4x-1
14=8x
x=7/4
x²-4x+4-x²+9=4x-1
8x=14
x=7/4