∵(12x+5)(12x+5)(6x-1)(x+1)=55/2==>(12x+5)²(12x-2)(12x+12)=660 (方程两边筒乘以24)==>(12x+5)²((12x+5)-7)((12x+5)+7)=660==>(12x+5)²[(12x+5)²-49]=660 (应用两数平方差公式)==>(12x+5)^4-...