(﹣x²+2x+5)+(4x²-3-6x)

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/29 08:51:33
(﹣x²+2x+5)+(4x²-3-6x)

(﹣x²+2x+5)+(4x²-3-6x)
(﹣x²+2x+5)+(4x²-3-6x)

(﹣x²+2x+5)+(4x²-3-6x)
(-x²+2x+5)+(4x²-3-6x)
=-x²+2x+5+4x²-3-6x
=3x²-4x+2

原式=﹣x²+2x+5+4x²-3-6x
=3x²-4x+2

(﹣x²+2x+5)+(4x²-3-6x)
=﹣x²+2x+5+4x²-3-6x
=3x²-4x+2