Question

what are the quadratic function f(b)=b^2-75?

Answer 1

b² - 75 = 0

b² = 0 + 75

b² = 75

b = + or -√75

b = + or -√(25*3)

b = + or -√25 *√3

b = + or - 5√3

b = 5 square root of 3 and b = -5 square root of 3