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4/x+4=16x=
We move all terms to the left:
4/x+4-(16x)=0
Domain of the equation: x!=0We add all the numbers together, and all the variables
x∈R
-16x+4/x+4=0
We multiply all the terms by the denominator
-16x*x+4*x+4=0
We add all the numbers together, and all the variables
4x-16x*x+4=0
Wy multiply elements
-16x^2+4x+4=0
a = -16; b = 4; c = +4;
Δ = b2-4ac
Δ = 42-4·(-16)·4
Δ = 272
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{272}=\sqrt{16*17}=\sqrt{16}*\sqrt{17}=4\sqrt{17}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(4)-4\sqrt{17}}{2*-16}=\frac{-4-4\sqrt{17}}{-32} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(4)+4\sqrt{17}}{2*-16}=\frac{-4+4\sqrt{17}}{-32} $
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