f(x)=0, where f(x)=-5x^2+3x+5

Question

What is the approximate value of x

Answer 1

Using the quadratic formula, x = -3/(-5*2) ± √[3² - 4(-5)(5)] / (-5*2) = 3/10 ± √109/10

 

x ≅ 1.34 or -0.74