
分解因式及化简(1)x3y-2x2y2+xy3 (2)a2(a-b)+4b2(b-a)(3)3x+2?1x?2+2xx2?4 &nb...
分解因式及化简(1)x3y-2x2y2+xy3(2)a2(a-b)+4b2(b-a)(3)3x+2?1x?2+2xx2?4(4)1x+1+x2?xx2?2x?3÷xx?3...
分解因式及化简(1)x3y-2x2y2+xy3 (2)a2(a-b)+4b2(b-a)(3)3x+2?1x?2+2xx2?4 (4)1x+1+x2?xx2?2x?3÷xx?3.
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(1)原式=xy(x2-2xy+y2)=xy(x-y)2;
(2)原式=(a-b)(a2-4b2)=(a-b)(a+2b)(a-2b);
(3)原式=
=
=
;
(4)原式=
+
?
=
=
.
(2)原式=(a-b)(a2-4b2)=(a-b)(a+2b)(a-2b);
(3)原式=
3(x?2)?(x+2)+2x |
(x+2)(x?2) |
4(x?2) |
(x+2)(x?2) |
4 |
x+2 |
(4)原式=
1 |
x+1 |
x(x?1) |
(x?3)(x+1) |
x?3 |
x |
1+x?1 |
x+1 |
x |
x+1 |
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