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5-2x=5x^2
We move all terms to the left:
5-2x-(5x^2)=0
determiningTheFunctionDomain -5x^2-2x+5=0
a = -5; b = -2; c = +5;
Δ = b2-4ac
Δ = -22-4·(-5)·5
Δ = 104
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{104}=\sqrt{4*26}=\sqrt{4}*\sqrt{26}=2\sqrt{26}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-2)-2\sqrt{26}}{2*-5}=\frac{2-2\sqrt{26}}{-10} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-2)+2\sqrt{26}}{2*-5}=\frac{2+2\sqrt{26}}{-10} $
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