SOLUTION: What is the minimum or maximum value of the quadratic function: {{{ f(x)= 5x^2-20x+9 }}} ?

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: What is the minimum or maximum value of the quadratic function: {{{ f(x)= 5x^2-20x+9 }}} ?       Log On


   

Question 754823: What is the minimum or maximum value of the quadratic function: +f%28x%29=+5x%5E2-20x%2B9+ ?

Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
min value occurs at

x%5Bmin%5D=-b%2F%282a%29=-%28-20%29%2F%282%2A5%29=2


the actual value is

+f%282%29=+5%2A2%5E2-20%2A2%2B9=-11+



:)