因式分x-2x2=______. a3-4a=______a3-2a2+a=______.
题型:填空题难度:一般来源:不详
因式分x-2x2=______. a3-4a=______ a3-2a2+a=______. |
答案
x-2x2=x(1-2x);
a3-4a, =a(a2-4), =a(a+2)(a-2);
a3-2a2+a, =a(a2-2a+1), =a(a-1)2. 故答案为:x(1-2x);a(a+2)(a-2);a(a-1)2. |
举一反三
多项式x2+px-4可分解为两个一次因式的积,整数p的值是______. |
分解因式: (1)x2-9=______; (2)a3-4a=______; (3)y2-4y+4=______; (4)-m2-m-=______. |
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