对a3-2a2b+ab2进行因式分解,正确的是( )A.a(a2-2ab+b2)B.a(a-b)2C.(a-b)(a2-ab)D.a3-ab(2a-b)
题型:单选题难度:简单来源:不详
对a3-2a2b+ab2进行因式分解,正确的是( )A.a(a2-2ab+b2) | B.a(a-b)2 | C.(a-b)(a2-ab) | D.a3-ab(2a-b) |
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答案
a3-2a2b+ab2, =a(a2-2ab+b2), =a(a-b)2. 故选B. |
举一反三
分解因式a3-4a等于( )A.a(a2-4) | B.a2(a-) | C.a(a+2)(a-2) | D.a(a-2)2 |
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因式分ax2-4ay2,正确结果是( )A.4a(x2-y2) | B.a(x2-4y2) | C.a(x+2y)(x-2y) | D.4a(x+y)(x-y) |
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对多项式3x2-27因式分解,结果正确的是( )A.3(x2-9) | B.3(x+3)2 | C.(3x+3)(3x-9) | D.3(x+3)(x-3) |
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分解因式-2a+a4的结果是( )A.-a(2-a3) | B.2a(1-a) | C.-2a(1-a) | D.-2a(1+a) |
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下列各式分解因式错误的是( )A.2x2+2x=2x(x+1) | B.x2-4x+4=(x-2)2 | C.x2-y2=(x+y)(x-y) | D.a+ab-ac=a(b-c) |
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