If using the method of completing the square to solve the quadratic equation x^2-16x+37=0, which number would have to be added to complete the square ?

this is the formula: v = the value of investment at the end of the time period

p = the principal amount (the initial amount invested)

r = the annual interest rate

n = the annual frequency of compounding (how many times a year interest is added)

t = the number of years the money is invested

^ means raise to the power of