2x-3x²-6-2x+2x²+5
问题描述:
2x-3x²-6-2x+2x²+5
答
2x-3x²-6-2x+2x²+5
=-x²-1
=-(x²+1)
2x-3x²-6-2x+2x²+5
2x-3x²-6-2x+2x²+5
=-x²-1
=-(x²+1)