(1) (2)( 3 ) ( 4 ) x2+3x+2
题型:解答题难度:简单来源:不详
(1) (2) ( 3 ) ( 4 ) x2+3x+2 |
答案
(1)(a-3)(a-4), (2)(x-4y)2, ( 3 ) (2m+3n)(2m-3n), ( 4 ) (x+1)(x+2) |
解析
(1)=(a-3)2-(a-3)=(a-3)(a-4) (2)=(x-4y)2 ( 3 )=(2m+3n)(2m-3n) ( 4 ) x2+3x+2=(x+1)(x+2) |
举一反三
(1) (2) ( 3 ) ( 4 ) x2+3x+2 |
若单项式与单项式的和仍是单项式,则=_______. |
若单项式与单项式的和仍是单项式,则=_______. |
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