v2-7v-5=-6v

Solution for v2-7v-5=-6v equation:

v2-7v-5=-6v

We move all terms to the left:

v2-7v-5-(-6v)=0

We add all the numbers together, and all the variables

v^2-7v-(-6v)-5=0

We get rid of parentheses

v^2-7v+6v-5=0

We add all the numbers together, and all the variables

v^2-1v-5=0

a = 1; b = -1; c = -5;
Δ = b2-4ac
Δ = -12-4·1·(-5)
Δ = 21
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$v_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$v_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$v_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-1)-\sqrt{21}}{2*1}=\frac{1-\sqrt{21}}{2}
$
$v_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-1)+\sqrt{21}}{2*1}=\frac{1+\sqrt{21}}{2}
$