问题
解答题
化简:(1)3a+(-8a+2)-(3-4a) (2)
|
答案
(1)原式=3a-8a+2-3+4a
=-a-1;
(2)原式=
xy2-1 2
x2y+1 2
x2y-y3-xy2+3y31 2
=-
xy2+2y3.1 2
化简:(1)3a+(-8a+2)-(3-4a) (2)
|
(1)原式=3a-8a+2-3+4a
=-a-1;
(2)原式=
xy2-1 2
x2y+1 2
x2y-y3-xy2+3y31 2
=-
xy2+2y3.1 2