题目内容
计算:
(1)(3x+5x3-2x2)-(5x3-3x);
(2)7x+2(x2-2)-4(
x2-x+3).
(1)(3x+5x3-2x2)-(5x3-3x);
(2)7x+2(x2-2)-4(
1 |
2 |
(1)原式=3x+5x3-2x2-5x3+3x,
=-2x2+6x;
(2)原式=7x+2x2-4-2x2+4x-12
=11x-16.
=-2x2+6x;
(2)原式=7x+2x2-4-2x2+4x-12
=11x-16.
练习册系列答案
相关题目