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X*3X=673
We move all terms to the left:
X*3X-(673)=0
Wy multiply elements
3X^2-673=0
a = 3; b = 0; c = -673;
Δ = b2-4ac
Δ = 02-4·3·(-673)
Δ = 8076
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}$$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{8076}=\sqrt{4*2019}=\sqrt{4}*\sqrt{2019}=2\sqrt{2019}$$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-2\sqrt{2019}}{2*3}=\frac{0-2\sqrt{2019}}{6} =-\frac{2\sqrt{2019}}{6} =-\frac{\sqrt{2019}}{3} $$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+2\sqrt{2019}}{2*3}=\frac{0+2\sqrt{2019}}{6} =\frac{2\sqrt{2019}}{6} =\frac{\sqrt{2019}}{3} $
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