(1/2)x+4=10x=

Solution for (1/2)x+4=10x= equation:

(1/2)x+4=10x=

We move all terms to the left:

(1/2)x+4-(10x)=0


Domain of the equation: 2)x!=0

x!=0/1

x!=0

x∈R


We add all the numbers together, and all the variables

(+1/2)x-10x+4=0

We add all the numbers together, and all the variables

-10x+(+1/2)x+4=0

We multiply parentheses

x^2-10x+4=0

a = 1; b = -10; c = +4;
Δ = b2-4ac
Δ = -102-4·1·4
Δ = 84
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:

$\sqrt{\Delta}=\sqrt{84}=\sqrt{4*21}=\sqrt{4}*\sqrt{21}=2\sqrt{21}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-10)-2\sqrt{21}}{2*1}=\frac{10-2\sqrt{21}}{2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-10)+2\sqrt{21}}{2*1}=\frac{10+2\sqrt{21}}{2}
$