3x2-9=39;-4,3,4

Solution for 3x2-9=39;-4,3,4 equation:

3x^2-9=39-4.3.4

We move all terms to the left:

3x^2-9-(39-4.3.4)=0

We add all the numbers together, and all the variables

3x^2-9-(37.28)=0

We add all the numbers together, and all the variables

3x^2-46.28=0

a = 3; b = 0; c = -46.28;
Δ = b2-4ac
Δ = 02-4·3·(-46.28)
Δ = 555.36
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{-(0)-\sqrt{555.36}}{2*3}=\frac{0-\sqrt{555.36}}{6}
=-\frac{\sqrt{}}{6}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{555.36}}{2*3}=\frac{0+\sqrt{555.36}}{6}
=\frac{\sqrt{}}{6}
$