X^2-0.017x-0.067=0

Solution for X^2-0.017x-0.067=0 equation:

X^2-0.017X-0.067=0

a = 1; b = -0.017; c = -0.067;
Δ = b2-4ac
Δ = -0.0172-4·1·(-0.067)
Δ = 0.268289
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{-(-0.017)-\sqrt{0.268289}}{2*1}=\frac{0.017-\sqrt{0.268289}}{2}
$
$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-0.017)+\sqrt{0.268289}}{2*1}=\frac{0.017+\sqrt{0.268289}}{2}
$