合并同类项2x^2-{-3x+6+[4x^2-(2x^2-3x+2)]}_数学解答

合并同类项2x^2-{-3x+6+[4x^2-(2x^2-3x+2)]}

人气：248 ℃　时间：2019-10-31 22:54:44

解答

2x^2-{-3x+6+[4x^2-(2x^2-3x+2)]}
=2x^2-[-3x+6+(4x^2-2x^2+3x-2)]
=2x^2-(-3x+6+4x^2-2x^2+3x-2)
=2x^2+3x-6-4x^2+2x^2-3x+2
=(2-4+2)x^2+(3-3)x+(-6+2)
=0+0-4
=-4