solve 2v^2-90=0, where v is a real number
First thing you want to do is put v by itselfAdd 90 to both sides2v^2 = 90Divide by 2 on both sidesv^2 = 45And then take the sqrt(45)v = sqrt(45)We can reduce this by finding the perfect square which is 9v = sqrt(9) sqrt(5)So,v = 3 sqrt(5)
