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14/2+x=12/2x+3
We move all terms to the left:
14/2+x-(12/2x+3)=0
Domain of the equation: 2x+3)!=0We add all the numbers together, and all the variables
x∈R
x-(12/2x+3)+7=0
We get rid of parentheses
x-12/2x-3+7=0
We multiply all the terms by the denominator
x*2x-3*2x+7*2x-12=0
Wy multiply elements
2x^2-6x+14x-12=0
We add all the numbers together, and all the variables
2x^2+8x-12=0
a = 2; b = 8; c = -12;
Δ = b2-4ac
Δ = 82-4·2·(-12)
Δ = 160
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{160}=\sqrt{16*10}=\sqrt{16}*\sqrt{10}=4\sqrt{10}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(8)-4\sqrt{10}}{2*2}=\frac{-8-4\sqrt{10}}{4} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(8)+4\sqrt{10}}{2*2}=\frac{-8+4\sqrt{10}}{4} $
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