(a²-b²) 3(a²-b²)-18 分解因式 急用!

问题描述:

(a²-b²) 3(a²-b²)-18 分解因式 急用!

(a²-b²) -3(a²-b²)-18=2(a²-b²)²-18=2【(a²-b²)²-9】=2(a²-b²+3)(a²-b²+3)(a²-b²)3(a²-b²)-18=3(a²-b²)...