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x^2-103x-70=0
a = 1; b = -103; c = -70;
Δ = b2-4ac
Δ = -1032-4·1·(-70)
Δ = 10889
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{-(-103)-\sqrt{10889}}{2*1}=\frac{103-\sqrt{10889}}{2} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-103)+\sqrt{10889}}{2*1}=\frac{103+\sqrt{10889}}{2} $
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