Question

What are the zeros of the quadratic function f (x) = 2x^2 -10x-3?

Answer 1

x=2.5+sqrt(300)/4, 2.5-sqrt(300)/4

Explanation:

1. Need to factor or can use the quadratic formula

2x^2-10x-3=0

a=2, b=-10, c=-3

[-b+-sqrt(b^2-4*a*c)]/(2*a)

[10+-sqrt(100-4*(-200)]/4

[10+- sqrt(300)]/4

x=2.5+sqrt(300)/4, 2.5-sqrt(300)/4