指出下列多项式的次数和项数.
问题描述:
指出下列多项式的次数和项数.
①3x²-2x²y+4x²y²
②-2+4x²y-1/2xy²-3y³+5y^4
答
1.次数4,项数为3x²,-2x²y,4x²y².
2.次数4,项数为-2,4x²y,-1/2xy²,-3y³,5y^4.