3w^2+2=56

Solution for 3w^2+2=56 equation:

3w^2+2=56

We move all terms to the left:

3w^2+2-(56)=0

We add all the numbers together, and all the variables

3w^2-54=0

a = 3; b = 0; c = -54;
Δ = b2-4ac
Δ = 02-4·3·(-54)
Δ = 648
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$w_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$w_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{648}=\sqrt{324*2}=\sqrt{324}*\sqrt{2}=18\sqrt{2}$
$w_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-18\sqrt{2}}{2*3}=\frac{0-18\sqrt{2}}{6}
=-\frac{18\sqrt{2}}{6}
=-3\sqrt{2}
$
$w_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+18\sqrt{2}}{2*3}=\frac{0+18\sqrt{2}}{6}
=\frac{18\sqrt{2}}{6}
=3\sqrt{2}
$