(a-b) (a+

how do you solve this equation?

What are the soultion(s) to the quadratic equation 40- x^2=0

Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.

Why can't my rank go i have 1723 points, but my rank is only at ambitious, which is only 250 points! like, (p.s. i know this isn't related to math, but i just don't know why it's doing this and i would really appreciate if someone could tell me whats going on with this)