x^2-4/9.8=0

Solution for x^2-4/9.8=0 equation:

x^2-4/9.8=0

We multiply all the terms by the denominator


x^2*9.8-4=0

Wy multiply elements

9.8x^2-4=0

a = 9.8; b = 0; c = -4;
Δ = b2-4ac
Δ = 02-4·9.8·(-4)
Δ = 156.8
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{156.8}}{2*9.8}=\frac{0-\sqrt{156.8}}{19.6}
=-\frac{\sqrt{}}{19.6}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{156.8}}{2*9.8}=\frac{0+\sqrt{156.8}}{19.6}
=\frac{\sqrt{}}{19.6}
$