分解因式:(1)2m³—8m=(2)a²b—4b³=(3)3a²—12ab+12b²=(4)5x²—20= (5)a²—2a=(6)2a²—4a+2= (7)x²—4= (8)x³—9x= (9)2a³—8a²+8a= (10)am²—4
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![分解因式:(1)2m³—8m=(2)a²b—4b³=(3)3a²—12ab+12b²=(4)5x²—20= (5)a²—2a=(6)2a²—4a+2= (7)x²—4= (8)x³—9x= (9)2a³—8a²+8a= (10)am²—4](/uploads/image/z/671605-61-5.jpg?t=%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%EF%BC%9A%EF%BC%881%EF%BC%892m%26%23179%3B%E2%80%948m%3D%EF%BC%882%EF%BC%89a%26%23178%3Bb%E2%80%944b%26%23179%3B%3D%EF%BC%883%EF%BC%893a%26%23178%3B%E2%80%9412ab%2B12b%26%23178%3B%3D%EF%BC%884%EF%BC%895x%26%23178%3B%E2%80%9420%3D+%EF%BC%885%EF%BC%89a%26%23178%3B%E2%80%942a%3D%EF%BC%886%EF%BC%892a%26%23178%3B%E2%80%944a%2B2%3D+%EF%BC%887%EF%BC%89x%26%23178%3B%E2%80%944%3D+%EF%BC%888%EF%BC%89x%26%23179%3B%E2%80%949x%3D+%EF%BC%889%EF%BC%892a%26%23179%3B%E2%80%948a%26%23178%3B%2B8a%3D+%2810%29am%26%23178%3B%E2%80%944)
分解因式:(1)2m³—8m=(2)a²b—4b³=(3)3a²—12ab+12b²=(4)5x²—20= (5)a²—2a=(6)2a²—4a+2= (7)x²—4= (8)x³—9x= (9)2a³—8a²+8a= (10)am²—4
分解因式:(1)2m³—8m=(2)a²b—4b³=(3)3a²—12ab+12b²=
(4)5x²—20= (5)a²—2a=
(6)2a²—4a+2= (7)x²—4= (8)x³—9x= (9)2a³—8a²+8a= (10)am²—4an²=
分解因式:(1)2m³—8m=(2)a²b—4b³=(3)3a²—12ab+12b²=(4)5x²—20= (5)a²—2a=(6)2a²—4a+2= (7)x²—4= (8)x³—9x= (9)2a³—8a²+8a= (10)am²—4
(1)2m³—8m=2m(m²-4)=2m(m+2)(m-2)
(2)a²b—4b³=b(a²-4b²)=b(a+2b)(a-2b)
(3)3a²—12ab+12b²=3(a²-4ab+4b²)=3(a-2b)²
(4)5x²—20=5(x²-4)=5(x+2)(x-2)
(5)a²—2a=a(a-2)