将下列各式分解因式:(1)3x-12x 3 (2)(x 2 +y 2 ) 2 -4x 2 y 2
将下列各式分解因式:(1)3x-12x3(2)(x2+y2)2-4x2y2....
将下列各式分解因式:(1)3x-12x 3 (2)(x 2 +y 2 ) 2 -4x 2 y 2 .
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gnr0507
2014-09-23
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超过82用户采纳过TA的回答
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(1)3x-12x 3 , =3x(1-4x 2 ), =3x(1+2x)(1-2x);
(2)(x 2 +y 2 ) 2 -4x 2 y 2 , =(x 2 +y 2 +2xy)(x 2 +y 2 -2xy), =(x+y) 2 (x-y) 2 . |
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