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(3x-8)(x-1)=2
We move all terms to the left:
(3x-8)(x-1)-(2)=0
We multiply parentheses ..
(+3x^2-3x-8x+8)-2=0
We get rid of parentheses
3x^2-3x-8x+8-2=0
We add all the numbers together, and all the variables
3x^2-11x+6=0
a = 3; b = -11; c = +6;
Δ = b2-4ac
Δ = -112-4·3·6
Δ = 49
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{49}=7$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-11)-7}{2*3}=\frac{4}{6} =2/3 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-11)+7}{2*3}=\frac{18}{6} =3 $
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