(m-1)x的2次方+(3m-2)乘以x的2n次方-3+4m+n=0是一元一次方程 m-1=0 2n=1 m=1 n=1/2 x-3+4+1/2=0 x=-3/2
有:m-1=0, 2n=1则+3/2=0其解为x=-3/2