950-4.9x^2-9x=0

Solution for 950-4.9x^2-9x=0 equation:

950-4.9x^2-9x=0

a = -4.9; b = -9; c = +950;
Δ = b2-4ac
Δ = -92-4·(-4.9)·950
Δ = 18701
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{-(-9)-\sqrt{18701}}{2*-4.9}=\frac{9-\sqrt{18701}}{-9.8}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-9)+\sqrt{18701}}{2*-4.9}=\frac{9+\sqrt{18701}}{-9.8}
$