去括号6x^3-[3x^2-(x+1)]
问题描述:
去括号6x^3-[3x^2-(x+1)]
答
去完括号就是这样
6x^3-3x^2+x+1
去括号6x^3-[3x^2-(x+1)]
去完括号就是这样
6x^3-3x^2+x+1