3x2=5-14x

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Solution for 3x2=5-14x equation:



3x^2=5-14x
We move all terms to the left:
3x^2-(5-14x)=0
We add all the numbers together, and all the variables
3x^2-(-14x+5)=0
We get rid of parentheses
3x^2+14x-5=0
a = 3; b = 14; c = -5;
Δ = b2-4ac
Δ = 142-4·3·(-5)
Δ = 256
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{256}=16$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(14)-16}{2*3}=\frac{-30}{6} =-5 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(14)+16}{2*3}=\frac{2}{6} =1/3 $

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