2x²-4x+3-3x²-5x+2
问题描述:
2x²-4x+3-3x²-5x+2
答
2x²-4x+3-3x²-5x+2
=-x²-9x+5
2x²-4x+3-3x²-5x+2
2x²-4x+3-3x²-5x+2
=-x²-9x+5