解方程x3-7x+6=0

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解方程x3-7x+6=0解方程x3-7x+6=0解方程x3-7x+6=0x3-7x+6=0x3-x-6x+6=0x(x2-1)-6(x-1)=0x(x+1)(x-1)-6(x-1)=0(x-1)(x^

解方程x3-7x+6=0
解方程x3-7x+6=0

解方程x3-7x+6=0
x3-7x+6=0
x3-x-6x+6=0
x(x2-1)-6(x-1)=0
x(x+1)(x-1)-6(x-1)=0
(x-1)(x^2+x-6)=0
(x-1)(x+3)(x-2)=0
x=1或x=-3或x=2

x=1