F(x)=5-4/3x

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Solution for F(x)=5-4/3x equation:



(F)=5-4/3F
We move all terms to the left:
(F)-(5-4/3F)=0
Domain of the equation: 3F)!=0
F!=0/1
F!=0
F∈R
We add all the numbers together, and all the variables
F-(-4/3F+5)=0
We get rid of parentheses
F+4/3F-5=0
We multiply all the terms by the denominator
F*3F-5*3F+4=0
Wy multiply elements
3F^2-15F+4=0
a = 3; b = -15; c = +4;
Δ = b2-4ac
Δ = -152-4·3·4
Δ = 177
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$F_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$F_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$F_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-15)-\sqrt{177}}{2*3}=\frac{15-\sqrt{177}}{6} $
$F_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-15)+\sqrt{177}}{2*3}=\frac{15+\sqrt{177}}{6} $

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