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0.6x+7/4x+x=4014
We move all terms to the left:
0.6x+7/4x+x-(4014)=0
Domain of the equation: 4x!=0We add all the numbers together, and all the variables
x!=0/4
x!=0
x∈R
1.6x+7/4x-4014=0
We multiply all the terms by the denominator
(1.6x)*4x-4014*4x+7=0
We add all the numbers together, and all the variables
(+1.6x)*4x-4014*4x+7=0
We multiply parentheses
4x^2-4014*4x+7=0
Wy multiply elements
4x^2-16056x+7=0
a = 4; b = -16056; c = +7;
Δ = b2-4ac
Δ = -160562-4·4·7
Δ = 257795024
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{257795024}=\sqrt{16*16112189}=\sqrt{16}*\sqrt{16112189}=4\sqrt{16112189}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-16056)-4\sqrt{16112189}}{2*4}=\frac{16056-4\sqrt{16112189}}{8} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-16056)+4\sqrt{16112189}}{2*4}=\frac{16056+4\sqrt{16112189}}{8} $
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