分解因式:(1)4x2y2+12x3y5-8x4y3;(2)(x+y)2-4y2;(3)a3-10a2+25a;(4)-x5y3+x3y5.
题型:解答题难度:一般来源:不详
分解因式: (1)4x2y2+12x3y5-8x4y3; (2)(x+y)2-4y2; (3)a3-10a2+25a; (4)-x5y3+x3y5. |
答案
(1)4x2y2+12x3y5-8x4y3=4x2y2(1+3xy3-2x2y);
(2)(x+y)2-4y2 =(x+y+2y)(x+y-2y) =(x+3y)(x-y);
(3)a3-10a2+25a =a(a2-10a+25) =a(a+5)2;
(4)-x5y3+x3y5 =-x3y3(x2-y2) =-x3y3(x+y)(x-y). |
举一反三
下列各式不能用公式法分解因式的是( )A.-x2+4y2 | B.-x2-2xy-y2 | C.m2-mn+n2 | D.a2-4(a-b)2 |
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实数范围内因式分解 (1)7x2-2 (2)3x2-2x+2. |
在实数范围内分解因式:ax4-16a=______. |
分解因式: (1)x3+x2-4x-4 (2)25xn-10xn+1+xn+2. |
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