x+1=-1/2x+4

Solution for x+1=-1/2x+4 equation:

x+1=-1/2x+4

We move all terms to the left:

x+1-(-1/2x+4)=0


Domain of the equation: 2x+4)!=0

x∈R


We get rid of parentheses

x+1/2x-4+1=0

We multiply all the terms by the denominator


x*2x-4*2x+1*2x+1=0

Wy multiply elements

2x^2-8x+2x+1=0

We add all the numbers together, and all the variables

2x^2-6x+1=0

a = 2; b = -6; c = +1;
Δ = b2-4ac
Δ = -62-4·2·1
Δ = 28
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:

$\sqrt{\Delta}=\sqrt{28}=\sqrt{4*7}=\sqrt{4}*\sqrt{7}=2\sqrt{7}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-6)-2\sqrt{7}}{2*2}=\frac{6-2\sqrt{7}}{4}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-6)+2\sqrt{7}}{2*2}=\frac{6+2\sqrt{7}}{4}
$