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-0.5x^2+175x-330=0
a = -0.5; b = 175; c = -330;
Δ = b2-4ac
Δ = 1752-4·(-0.5)·(-330)
Δ = 29965
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{-(175)-\sqrt{29965}}{2*-0.5}=\frac{-175-\sqrt{29965}}{-1} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(175)+\sqrt{29965}}{2*-0.5}=\frac{-175+\sqrt{29965}}{-1} $
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