1/4w+1/2w-4=11

Solution for 1/4w+1/2w-4=11 equation:

1/4w+1/2w-4=11

We move all terms to the left:

1/4w+1/2w-4-(11)=0


Domain of the equation: 4w!=0

w!=0/4

w!=0

w∈R



Domain of the equation: 2w!=0

w!=0/2

w!=0

w∈R


We add all the numbers together, and all the variables

1/4w+1/2w-15=0

We calculate fractions


2w/8w^2+4w/8w^2-15=0

We multiply all the terms by the denominator


2w+4w-15*8w^2=0

We add all the numbers together, and all the variables

6w-15*8w^2=0

Wy multiply elements

-120w^2+6w=0

a = -120; b = 6; c = 0;
Δ = b2-4ac
Δ = 62-4·(-120)·0
Δ = 36
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$w_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$w_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{36}=6$
$w_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(6)-6}{2*-120}=\frac{-12}{-240}
=1/20
$
$w_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(6)+6}{2*-120}=\frac{0}{-240}
=0
$