0=-8x2-6x+5

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Solution for 0=-8x2-6x+5 equation:



0=-8x^2-6x+5
We move all terms to the left:
0-(-8x^2-6x+5)=0
We add all the numbers together, and all the variables
-(-8x^2-6x+5)=0
We get rid of parentheses
8x^2+6x-5=0
a = 8; b = 6; c = -5;
Δ = b2-4ac
Δ = 62-4·8·(-5)
Δ = 196
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{196}=14$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(6)-14}{2*8}=\frac{-20}{16} =-1+1/4 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(6)+14}{2*8}=\frac{8}{16} =1/2 $

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