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4x^2-2x=194
We move all terms to the left:
4x^2-2x-(194)=0
a = 4; b = -2; c = -194;
Δ = b2-4ac
Δ = -22-4·4·(-194)
Δ = 3108
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{3108}=\sqrt{4*777}=\sqrt{4}*\sqrt{777}=2\sqrt{777}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-2)-2\sqrt{777}}{2*4}=\frac{2-2\sqrt{777}}{8} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-2)+2\sqrt{777}}{2*4}=\frac{2+2\sqrt{777}}{8} $
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