解方程(1)3x²+2x-4=0(2)x²+8x=9(3)x²+4x=5(4)x²-8x+9=0(用配方法)
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/03 10:30:09
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解方程(1)3x²+2x-4=0(2)x²+8x=9(3)x²+4x=5(4)x²-8x+9=0(用配方法)
解方程(1)3x²+2x-4=0(2)x²+8x=9(3)x²+4x=5(4)x²-8x+9=0(用配方法)
解方程(1)3x²+2x-4=0(2)x²+8x=9(3)x²+4x=5(4)x²-8x+9=0(用配方法)
1、(根号3x+1)^2=5
2、(X+4)^2=25
3、(x+2)^2=9
4、(x-4)^2=7
配方好了应该可以做了吧