My math teacher showed me 0.999...=1. I was surprised & confused. Reddit r/theydidthemath
1:41
Square inside a square by connecting the opposite midpoint. Reddit geometry: r/homeworkhelp
10:55
Can we NOT solve x^4+64=0 like this?
8:51
Proving the pq formula for solving quadratic equations
8:58
0.99999... = 1 in Five Levels -- Elementary to Math Major
5:45
Looks so simple yet my class couldn't figure it out, Reddit r/askmath
11:21
Finding the roots of a 4th degree polynomial. Reddit precalculus r/HomeworkHelp
8:38
You use the quadratic formula all the time, but where did it come from?
10:53