解方程:(x-4)²-(x-3)(x+4)=2(3x+1)
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解方程:(x-4)²-(x-3)(x+4)=2(3x+1)
解方程:(x-4)²-(x-3)(x+4)=2(3x+1)
解方程:(x-4)²-(x-3)(x+4)=2(3x+1)
(x-4)²-(x-3)(x+4)=2(3x+1)
x²-8x+16-(x²+x-12)=6x+2
x²-8x+16-x²-x+12=6x+2
-9x+28=6x+2
6x+9x=28-2
15x=26
x=26/15
x²-8x+16-x²-x+12=6x+2
-9x+28=6x+2
15x=26
x=26/15