几道因式分解题(急!有重谢!)
来源:学生作业帮 编辑:搜狗做题网作业帮 分类:数学作业 时间:2024/07/13 07:05:30
几道因式分解题(急!有重谢!)
1)m^2-13m^2+36
2)-x^2-5xy+6y^2
3)2x^2+5x+3
4)12x^2y^2+17xy+6
一定要具体过程
采纳后还有重谢
1)m^2-13m^2+36
2)-x^2-5xy+6y^2
3)2x^2+5x+3
4)12x^2y^2+17xy+6
一定要具体过程
采纳后还有重谢
![几道因式分解题(急!有重谢!)](/uploads/image/z/16594304-32-4.jpg?t=%E5%87%A0%E9%81%93%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%E9%A2%98%EF%BC%88%E6%80%A5%21%E6%9C%89%E9%87%8D%E8%B0%A2%21%EF%BC%89)
1,m^4-13m^2+36
=(m^2-9)(m^2-4)
=(m+3)(m-3)(m+2)(m-2)
2,-x^2-5xy+6y^2
=-(x^2+5xy-6y^2)
=-(x+6y) (x-y)
3,2x^2+5x+3
=(2x+3)(x+1)
4,12x^2y^2+17xy+6
=(3xy+3)(4xy+2)
=6(xy+1) (2xy+1)
=(m^2-9)(m^2-4)
=(m+3)(m-3)(m+2)(m-2)
2,-x^2-5xy+6y^2
=-(x^2+5xy-6y^2)
=-(x+6y) (x-y)
3,2x^2+5x+3
=(2x+3)(x+1)
4,12x^2y^2+17xy+6
=(3xy+3)(4xy+2)
=6(xy+1) (2xy+1)