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-16x^2+17x+7=0
a = -16; b = 17; c = +7;
Δ = b2-4ac
Δ = 172-4·(-16)·7
Δ = 737
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{-(17)-\sqrt{737}}{2*-16}=\frac{-17-\sqrt{737}}{-32} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(17)+\sqrt{737}}{2*-16}=\frac{-17+\sqrt{737}}{-32} $
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