2t2-50t-30=0

Solution for 2t2-50t-30=0 equation:

2t^2-50t-30=0

a = 2; b = -50; c = -30;
Δ = b2-4ac
Δ = -502-4·2·(-30)
Δ = 2740
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$t_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$t_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{2740}=\sqrt{4*685}=\sqrt{4}*\sqrt{685}=2\sqrt{685}$
$t_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-50)-2\sqrt{685}}{2*2}=\frac{50-2\sqrt{685}}{4}
$
$t_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-50)+2\sqrt{685}}{2*2}=\frac{50+2\sqrt{685}}{4}
$