What calculator do i need for algebra 2

Absolutely nothing bad to say about this app here, best app in the world for college. But the free version is just as helpful and shows the clear format.

Also, in simultaneous equations in 3 or 4 variables, it would really help if we could choose a variable to eliminate in the elimination method rather than it just choosing what to eliminate. Best math app. Highly reccomend, i have a kid in school and I'm not the greatest at math so when she needs help with her homework at least I can use this to help both of us.

Also if you still can't figure out why stuff is the way it is, khan academy and youtube is a good help. Although, it would be better if it described the steps on how to do it, best app ever, yeah I understand that it doesn't do like 10-20% of the math you put in but the 80-90% it does do it gives the correct answer.