一道简单的配方,给过程~3x^2-9X+1如何配方?写出过程~在线等~谢谢~~~~各位了!~~!
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/30 18:41:13
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一道简单的配方,给过程~3x^2-9X+1如何配方?写出过程~在线等~谢谢~~~~各位了!~~!
一道简单的配方,给过程~
3x^2-9X+1如何配方?写出过程~在线等~谢谢~~~~各位了!~~!
一道简单的配方,给过程~3x^2-9X+1如何配方?写出过程~在线等~谢谢~~~~各位了!~~!
3x^2-9x+1
=3x^2-9x+27/4+1-27/4
=3(x^2-3x+9/4)-23/4
=3(x-3/2)^2-23/4
3[xx-3x+(3/2)^2]+1-4/27 = 3(x-3/2)^2-23/4