9c^2-11=718

Solution for 9c^2-11=718 equation:

9c^2-11=718

We move all terms to the left:

9c^2-11-(718)=0

We add all the numbers together, and all the variables

9c^2-729=0

a = 9; b = 0; c = -729;
Δ = b2-4ac
Δ = 02-4·9·(-729)
Δ = 26244
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$c_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$c_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{26244}=162$
$c_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-162}{2*9}=\frac{-162}{18}
=-9
$
$c_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+162}{2*9}=\frac{162}{18}
=9
$