4x²-8x-15-3x²+6x-2=多少?最好有列式
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/17 19:02:21
![4x²-8x-15-3x²+6x-2=多少?最好有列式](/uploads/image/z/3769213-13-3.jpg?t=4x%26%23178%3B-8x-15-3x%26%23178%3B%2B6x-2%3D%E5%A4%9A%E5%B0%91%3F%E6%9C%80%E5%A5%BD%E6%9C%89%E5%88%97%E5%BC%8F)
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4x²-8x-15-3x²+6x-2=多少?最好有列式
4x²-8x-15-3x²+6x-2=多少?最好有列式
4x²-8x-15-3x²+6x-2=多少?最好有列式
4x²-8x-15-3x²+6x-2
=4x²--3x²+6x-8x-15-2
=x²-2x-15-2
=x²-2x-17
4x²-8x-15-3x²+6x-2
=(4-3)x²+(-8+6)x+(-15-2)
=x²-2x-17
=x^2-2x-17
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