2x^2=9.8

Solution for 2x^2=9.8 equation:

2x^2=9.8

We move all terms to the left:

2x^2-(9.8)=0

We add all the numbers together, and all the variables

2x^2-9.8=0

a = 2; b = 0; c = -9.8;
Δ = b2-4ac
Δ = 02-4·2·(-9.8)
Δ = 78.4
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{78.4}}{2*2}=\frac{0-\sqrt{78.4}}{4}
=-\frac{\sqrt{}}{4}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{78.4}}{2*2}=\frac{0+\sqrt{78.4}}{4}
=\frac{\sqrt{}}{4}
$