X2+0.44x-1.76=0

Solution for X2+0.44x-1.76=0 equation:

X2+0.44X-1.76=0

We add all the numbers together, and all the variables

X^2+0.44X-1.76=0

a = 1; b = 0.44; c = -1.76;
Δ = b2-4ac
Δ = 0.442-4·1·(-1.76)
Δ = 7.2336
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{-(0.44)-\sqrt{7.2336}}{2*1}=\frac{-0.44-\sqrt{7.2336}}{2}
$
$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0.44)+\sqrt{7.2336}}{2*1}=\frac{-0.44+\sqrt{7.2336}}{2}
$