8x2-x-8x=3

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Solution for 8x2-x-8x=3 equation:



8x^2-x-8x=3
We move all terms to the left:
8x^2-x-8x-(3)=0
We add all the numbers together, and all the variables
8x^2-9x-3=0
a = 8; b = -9; c = -3;
Δ = b2-4ac
Δ = -92-4·8·(-3)
Δ = 177
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{-(-9)-\sqrt{177}}{2*8}=\frac{9-\sqrt{177}}{16} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-9)+\sqrt{177}}{2*8}=\frac{9+\sqrt{177}}{16} $

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