来自马金忠的问题
解方程x-15x+10x+24=0
解方程x-15x+10x+24=0
1回答
2020-04-15 00:59
解方程x-15x+10x+24=0
解方程x-15x+10x+24=0
(x-16x)+(x+10x+24)=0x(x+4)(x-4)+(x+4)(x+6)=0(x+4)【x(x-4)+(x+6)】=0(x+4)(x-4x+4x-3x+6)=0(x+4)(x-2)(x-2x-3)=0(x+4)(x-2)(x+1)(x-3)=0x+4=0或x-2=0或x+1=0或x...