3x2+2=2x+38

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Solution for 3x2+2=2x+38 equation:



3x^2+2=2x+38
We move all terms to the left:
3x^2+2-(2x+38)=0
We get rid of parentheses
3x^2-2x-38+2=0
We add all the numbers together, and all the variables
3x^2-2x-36=0
a = 3; b = -2; c = -36;
Δ = b2-4ac
Δ = -22-4·3·(-36)
Δ = 436
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:
$\sqrt{\Delta}=\sqrt{436}=\sqrt{4*109}=\sqrt{4}*\sqrt{109}=2\sqrt{109}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-2)-2\sqrt{109}}{2*3}=\frac{2-2\sqrt{109}}{6} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-2)+2\sqrt{109}}{2*3}=\frac{2+2\sqrt{109}}{6} $

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