4.9x^2=64

Solution for 4.9x^2=64 equation:

4.9x^2=64

We move all terms to the left:

4.9x^2-(64)=0

a = 4.9; b = 0; c = -64;
Δ = b2-4ac
Δ = 02-4·4.9·(-64)
Δ = 1254.4
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{1254.4}}{2*4.9}=\frac{0-\sqrt{1254.4}}{9.8}
=-\frac{\sqrt{}}{9.8}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{1254.4}}{2*4.9}=\frac{0+\sqrt{1254.4}}{9.8}
=\frac{\sqrt{}}{9.8}
$