问题
解答题
计算: (1)(-2)2-π0-
(2)(21x4y3-35x3y2+7x2y2)÷(-7x2y) |
答案
(1)原式=4-1-2-6=3-2-6=1-6=-5;
(2)原式=-3x2y3+5xy-y.
计算: (1)(-2)2-π0-
(2)(21x4y3-35x3y2+7x2y2)÷(-7x2y) |
(1)原式=4-1-2-6=3-2-6=1-6=-5;
(2)原式=-3x2y3+5xy-y.