5499=9x*9x+2520

Solution for 5499=9x*9x+2520 equation:

5499=9x*9x+2520

We move all terms to the left:

5499-(9x*9x+2520)=0

We get rid of parentheses

-9x*9x-2520+5499=0

We add all the numbers together, and all the variables

-9x*9x+2979=0

Wy multiply elements

-81x^2+2979=0

a = -81; b = 0; c = +2979;
Δ = b2-4ac
Δ = 02-4·(-81)·2979
Δ = 965196
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{965196}=\sqrt{2916*331}=\sqrt{2916}*\sqrt{331}=54\sqrt{331}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-54\sqrt{331}}{2*-81}=\frac{0-54\sqrt{331}}{-162}
=-\frac{54\sqrt{331}}{-162}
=-\frac{\sqrt{331}}{-3}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+54\sqrt{331}}{2*-81}=\frac{0+54\sqrt{331}}{-162}
=\frac{54\sqrt{331}}{-162}
=\frac{\sqrt{331}}{-3}
$