5v^2+6v+7=v^2-4v

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Solution for 5v^2+6v+7=v^2-4v equation:


Simplifying
5v2 + 6v + 7 = v2 + -4v

Reorder the terms:
7 + 6v + 5v2 = v2 + -4v

Reorder the terms:
7 + 6v + 5v2 = -4v + v2

Solving
7 + 6v + 5v2 = -4v + v2

Solving for variable 'v'.

Reorder the terms:
7 + 6v + 4v + 5v2 + -1v2 = -4v + v2 + 4v + -1v2

Combine like terms: 6v + 4v = 10v
7 + 10v + 5v2 + -1v2 = -4v + v2 + 4v + -1v2

Combine like terms: 5v2 + -1v2 = 4v2
7 + 10v + 4v2 = -4v + v2 + 4v + -1v2

Reorder the terms:
7 + 10v + 4v2 = -4v + 4v + v2 + -1v2

Combine like terms: -4v + 4v = 0
7 + 10v + 4v2 = 0 + v2 + -1v2
7 + 10v + 4v2 = v2 + -1v2

Combine like terms: v2 + -1v2 = 0
7 + 10v + 4v2 = 0

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

Divide each side by '4'.
1.75 + 2.5v + v2 = 0

Move the constant term to the right:

Add '-1.75' to each side of the equation.
1.75 + 2.5v + -1.75 + v2 = 0 + -1.75

Reorder the terms:
1.75 + -1.75 + 2.5v + v2 = 0 + -1.75

Combine like terms: 1.75 + -1.75 = 0.00
0.00 + 2.5v + v2 = 0 + -1.75
2.5v + v2 = 0 + -1.75

Combine like terms: 0 + -1.75 = -1.75
2.5v + v2 = -1.75

The v term is 2.5v.  Take half its coefficient (1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
2.5v + 1.5625 + v2 = -1.75 + 1.5625

Reorder the terms:
1.5625 + 2.5v + v2 = -1.75 + 1.5625

Combine like terms: -1.75 + 1.5625 = -0.1875
1.5625 + 2.5v + v2 = -0.1875

Factor a perfect square on the left side:
(v + 1.25)(v + 1.25) = -0.1875

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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