2x^2-30x+100=0
问题描述:
2x^2-30x+100=0
答
2x^2-30x+100=0
(2x-10)(x-10)=0
x=5或10
2x^2-30x+100=0
2x^2-30x+100=0
(2x-10)(x-10)=0
x=5或10