A.5xy2 | B.xy2 | C.2x2y4 | D.x2y4 |
A.a2b与-6ab2 | B.-x3y与2yx3 | C.2R与2R | D.35与53 |
A.3a2-2a2="1" | B.5-2x3=3x3 | C.3x2+2x3=5x5 | D.a3+a3=2a3 |
A.3x2-6x-1 | B.5x2-1 | C.3x2+2x-1 | D.3x2+6x-1 |
A.12次多项式 | B.6次多项式 |
C.次数不高于6的整式 | D.次数不低于6的多项式 |
A.与x,y都无关 | B.只与x有关 |
C.只与y有关 | D.与x,y都有关 |
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