Although i just took my DAT yesterday and still feel like ****. I'll try to help lmao
x^2-2x<0
factor
x(x-2)=0
x=0 x=2
now you have two solution so you must create a number line and check
pick a number less than 0 and then 0 and then a number between 0 and 2 and then 2 and then a number bigger than 2. Check and see if it satisfies the original inequality. You will find out at the end that only numbers between 0 and 2 will satisfy the inequality but 0 and 2 will NOT be included (0,2)