How do you solve 2x25x+1=0?

1 Answer
Nov 29, 2016

5+174=2.2807764064044
5174=0.21922359359558

Explanation:

I always try to find a reverse FOIL answer, but in this case, the quadratic equation is required.

And the answer can be verified at this site:
https://www.mathsisfun.com/quadratic-equation-solver.html

b±b24ac2a

In this equation:
a=2
b=5
c=1

(5)±(5)24(2)(1)2(2)

5+2584
5+174=2.2807764064044

52584
5174=0.21922359359558