(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!
答
(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)...
(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)...