多项式15a3b2+5a2b-20a3b3的公因式是( )A.5abB.5a2b2C.5a2bD.5a2b3
题型:单选题难度:一般来源:不详
多项式15a3b2+5a2b-20a3b3的公因式是( )A.5ab | B.5a2b2 | C.5a2b | D.5a2b3 |
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答案
15a3b2+5a2b-20a3b3公因式是5a2b, 故选C. |
举一反三
(1)单项式-12x12y3与8x10y6的公因式是______; (2)3ab4-6ab3+9ab2各项的公因式是______; (3)-4a2b+8ab-4a各项的公因式是______. |
(1)-xy2(x+y)3+x(x+y)2的公因式是______; (2)4x(m-n)+8y(n-m)2的公因式是______. |
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