5x2=3.14

Solution for 5x2=3.14 equation:

5x^2=3.14

We move all terms to the left:

5x^2-(3.14)=0

We add all the numbers together, and all the variables

5x^2-3.14=0

a = 5; b = 0; c = -3.14;
Δ = b2-4ac
Δ = 02-4·5·(-3.14)
Δ = 62.8
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{62.8}}{2*5}=\frac{0-\sqrt{62.8}}{10}
=-\frac{\sqrt{}}{10}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{62.8}}{2*5}=\frac{0+\sqrt{62.8}}{10}
=\frac{\sqrt{}}{10}
$