d>0, there are two real solutions
d=0, there is one real solution
d<0, there is no real solutions (but there are two imaginary solutions)
So if it is positive, there are two real solutions.
n is a variable, or an unknown number. you are trying to figure out what n is.
so, 45 - n = 35 means the same as: 35 = 45 - n
45 - 10 = 35
therefore, 10 is the correct answer!
oof cheaters cheat because they’re lazy that’s why i cheat xd