答:x²+5x-988=0x²+5x=988x³+6x²-933x+1014=(988-5x)x+6x²-933x+1014=x²+55x+1014=988+50x+1014=50x+2002把x从一元二次方程里面解答出来,然后代入可得(有两个值)怀疑933应该是983?