Question

提公因式法

1,找出下列各多项式的公因式:
(1)4x+8y (2)am+an (3)48mn–24m^2 n^3 (4)a^2b-2ab^2+ab
2.因式分解
(1)ab+ac=_______ （2）x^2+4x=_________
(3)mb^2+nb-b=________ (4) 8x-72=__________
(5)a^2b-2ab^2+ab=________ (6)a^2b-5ab=________
(7)4m^3-8m^2=__________

Answer 1

1 (1) 4 (2)a (3) 8mn (4)ab
2(1)a(b+c) (2)x(x+4) (3)b(mb+n-1) (4) 8(x-9) (5)ab(a-2b+1) (6)ab(a-5) (7)4m方卜吵（型枯侍m-2）败戚

Answer 2

1、①橘仔4 ②a ③圆拿汪24mn ④敏伍ab
2、
①a(b+c)
②x(x+4)
③b(mb+n-1)
④8(x-9)
⑤ab(a-2b+1)
⑥ab(a-5)
⑦4m²(m-2)