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X^2-43X-372=0
a = 1; b = -43; c = -372;
Δ = b2-4ac
Δ = -432-4·1·(-372)
Δ = 3337
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{-(-43)-\sqrt{3337}}{2*1}=\frac{43-\sqrt{3337}}{2} $$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-43)+\sqrt{3337}}{2*1}=\frac{43+\sqrt{3337}}{2} $
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