X^2+10x-1200=0

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/08 21:04:28
X^2+10x-1200=0X^2+10x-1200=0X^2+10x-1200=0x2+10x-1200=0x2+10x=1200x2+10x+52=1225(x+5)2=根号1225x+5=±35

X^2+10x-1200=0
X^2+10x-1200=0

X^2+10x-1200=0
x2+10x-1200=0
x2+10x=1200
x2+10x+52=1225
(x+5)2=根号1225
x+5=±35
x1=30 x2=-40