x²-25x+154=0,x²-12x-108=0,x²+4x-252=0,x²-11x-_其他解答

x²-25x+154=0,x²-12x-108=0,x²+4x-252=0,x²-11x-102=0,x²+15x-54x=0.
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人气：342 ℃　时间：2020-05-08 01:53:10

解答

x²-25x+154=0(x-11)(x-14)=0x1=11,x2=14x²-12x-108=0(x-18)(x+6)=0x1=18,x2=-6x²+4x-252=0(x-14)(x+18)=0x1=14,x2=-18x²-11x-102=0(x-17)(x+6)=0x1=17,x2=-6x²+15x-54x=0(x+18)(x-3)=0x1=-...