问题
填空题
分解因式:
2a2b-8b=______;
-3x3n+2+6x2n=-3x2n(______).
答案
2a2b-8b
=2b(a2-4)
=2b(a+2)(a-2);
-3x3n+2+6x2n=-3x2n(xn+2-2).
故答案为:2b(a+2)(a-2);-3x2n(xn+2-2).
分解因式:
2a2b-8b=______;
-3x3n+2+6x2n=-3x2n(______).
2a2b-8b
=2b(a2-4)
=2b(a+2)(a-2);
-3x3n+2+6x2n=-3x2n(xn+2-2).
故答案为:2b(a+2)(a-2);-3x2n(xn+2-2).