2x^2-30x+100=0

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/17 19:36:37
2x^2-30x+100=02x^2-30x+100=02x^2-30x+100=02x^2-30x+100=0(2x-10)(x-10)=0x=5或105或10(x-5)(x-10)=0,x=5,1

2x^2-30x+100=0
2x^2-30x+100=0

2x^2-30x+100=0
2x^2-30x+100=0
(2x-10)(x-10)=0
x=5或10

5或10

(x-5)(x-10)=0,x=5,10

2边同除2
则:x^2-15x+50=0
(x-5)*(x-10)=0
x1=5
x2=10