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x^2+23x-8=0
a = 1; b = 23; c = -8;
Δ = b2-4ac
Δ = 232-4·1·(-8)
Δ = 561
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{-(23)-\sqrt{561}}{2*1}=\frac{-23-\sqrt{561}}{2} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(23)+\sqrt{561}}{2*1}=\frac{-23+\sqrt{561}}{2} $
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