3x2-5x+11=242

Solution for 3x2-5x+11=242 equation:

3x^2-5x+11=242

We move all terms to the left:

3x^2-5x+11-(242)=0

We add all the numbers together, and all the variables

3x^2-5x-231=0

a = 3; b = -5; c = -231;
Δ = b2-4ac
Δ = -52-4·3·(-231)
Δ = 2797
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-5)-\sqrt{2797}}{2*3}=\frac{5-\sqrt{2797}}{6}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-5)+\sqrt{2797}}{2*3}=\frac{5+\sqrt{2797}}{6}
$