本文目录一览1,2x125xx52,奇迹暖暖联盟51高分攻略3,132114211n2的值求过程详细点4,32225131其中X105,15525352o146,奇迹暖暖攻略满天繁星多少钻7,用一元二次方程解下列方程1y5x122y2x24x13y3x28,设行列式D125134201115331,2x125xx54x2-4x+1-5=x2-5x3x2+x-4=0(3x+4)(x-1)=0∴x=-4/3x=13(x-2)=x-5(2x-1),3x-6=x-10x+5,12x=11,x=11/12,请采纳,