已知-3amb3与a3bn+1是同类项,则m+n=______.
题型:填空题难度:简单来源:不详
已知-3amb3与a3bn+1是同类项,则m+n=______. |
答案
∵-3amb3与a3bn+1是同类项, ∴m=3,n+1=3, ∴m=3,n=2, ∴m+n=5. 故答案为:5. |
举一反三
(-x+y)2=______(x-y)2(填“+”、“-”) |
x-2y-5a+6=x-( )A.-2y-5a+6 | B.2y-5a+6 | C.2y+5a-6 | D.2y+5a+6 |
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下列运算正确的是( )A.2a+3b=5ab | B.2(2a-b)=4a-b | C.4a-a=3 | D.-3(x-2)=-3x+6 |
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如果3xmy5与-2x2yn是同类项,那么m=______,n=______. |
若8x4ym和-2xny3是同类项,则nm=______. |
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