5x2-17x+7=0

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Solution for 5x2-17x+7=0 equation:



5x^2-17x+7=0
a = 5; b = -17; c = +7;
Δ = b2-4ac
Δ = -172-4·5·7
Δ = 149
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{149}}{2*5}=\frac{17-\sqrt{149}}{10} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-17)+\sqrt{149}}{2*5}=\frac{17+\sqrt{149}}{10} $

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