-4v^2+v+2=8

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Solution for -4v^2+v+2=8 equation:


Simplifying
-4v2 + v + 2 = 8

Reorder the terms:
2 + v + -4v2 = 8

Solving
2 + v + -4v2 = 8

Solving for variable 'v'.

Reorder the terms:
2 + -8 + v + -4v2 = 8 + -8

Combine like terms: 2 + -8 = -6
-6 + v + -4v2 = 8 + -8

Combine like terms: 8 + -8 = 0
-6 + v + -4v2 = 0

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
1.5 + -0.25v + v2 = 0

Move the constant term to the right:

Add '-1.5' to each side of the equation.
1.5 + -0.25v + -1.5 + v2 = 0 + -1.5

Reorder the terms:
1.5 + -1.5 + -0.25v + v2 = 0 + -1.5

Combine like terms: 1.5 + -1.5 = 0.0
0.0 + -0.25v + v2 = 0 + -1.5
-0.25v + v2 = 0 + -1.5

Combine like terms: 0 + -1.5 = -1.5
-0.25v + v2 = -1.5

The v term is v.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-0.25v + 0.25 + v2 = -1.5 + 0.25

Reorder the terms:
0.25 + -0.25v + v2 = -1.5 + 0.25

Combine like terms: -1.5 + 0.25 = -1.25
0.25 + -0.25v + v2 = -1.25

Factor a perfect square on the left side:
(v + 0.5)(v + 0.5) = -1.25

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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