因式分(1)4a2+6ab+2a;(2)2x2-12x+18;(3)3x2-27;(4)-a2b2+2abc2-c4.
题型:解答题难度:一般来源:不详
因式分 (1)4a2+6ab+2a; (2)2x2-12x+18; (3)3x2-27; (4)-a2b2+2abc2-c4. |
答案
(1)4a2+6ab+2a=2a(2a+3b+1);
(2)2x2-12x+18 =2(x2-6x+9) =2(x-3)2;
(3)3x2-27 =3(x2-9) =3(x+3)(x-3);
(4)-a2b2+2abc2-c4 =-(a2b2-2abc2+c4) =(ab-c2)2. |
举一反三
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