问题
解答题
化简:
①5x4+3x2y-10-3x2y+x4-1;
②3(-ab+2a)-(3a-ab).
答案
①原式=(5x4+x4)+(3x2y-3x2y)+(-10-1)
=6x4-11;
②原式=-3ab+6a-3a+ab
=-2ab+3a.
化简:
①5x4+3x2y-10-3x2y+x4-1;
②3(-ab+2a)-(3a-ab).
①原式=(5x4+x4)+(3x2y-3x2y)+(-10-1)
=6x4-11;
②原式=-3ab+6a-3a+ab
=-2ab+3a.