4v^2-32=-18-5v

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Solution for 4v^2-32=-18-5v equation:


Simplifying
4v2 + -32 = -18 + -5v

Reorder the terms:
-32 + 4v2 = -18 + -5v

Solving
-32 + 4v2 = -18 + -5v

Solving for variable 'v'.

Reorder the terms:
-32 + 18 + 5v + 4v2 = -18 + -5v + 18 + 5v

Combine like terms: -32 + 18 = -14
-14 + 5v + 4v2 = -18 + -5v + 18 + 5v

Reorder the terms:
-14 + 5v + 4v2 = -18 + 18 + -5v + 5v

Combine like terms: -18 + 18 = 0
-14 + 5v + 4v2 = 0 + -5v + 5v
-14 + 5v + 4v2 = -5v + 5v

Combine like terms: -5v + 5v = 0
-14 + 5v + 4v2 = 0

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

Divide each side by '4'.
-3.5 + 1.25v + v2 = 0

Move the constant term to the right:

Add '3.5' to each side of the equation.
-3.5 + 1.25v + 3.5 + v2 = 0 + 3.5

Reorder the terms:
-3.5 + 3.5 + 1.25v + v2 = 0 + 3.5

Combine like terms: -3.5 + 3.5 = 0.0
0.0 + 1.25v + v2 = 0 + 3.5
1.25v + v2 = 0 + 3.5

Combine like terms: 0 + 3.5 = 3.5
1.25v + v2 = 3.5

The v term is 1.25v.  Take half its coefficient (0.625).
Square it (0.390625) and add it to both sides.

Add '0.390625' to each side of the equation.
1.25v + 0.390625 + v2 = 3.5 + 0.390625

Reorder the terms:
0.390625 + 1.25v + v2 = 3.5 + 0.390625

Combine like terms: 3.5 + 0.390625 = 3.890625
0.390625 + 1.25v + v2 = 3.890625

Factor a perfect square on the left side:
(v + 0.625)(v + 0.625) = 3.890625

Calculate the square root of the right side: 1.97246673

Break this problem into two subproblems by setting 
(v + 0.625) equal to 1.97246673 and -1.97246673.

Subproblem 1

v + 0.625 = 1.97246673 Simplifying v + 0.625 = 1.97246673 Reorder the terms: 0.625 + v = 1.97246673 Solving 0.625 + v = 1.97246673 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-0.625' to each side of the equation. 0.625 + -0.625 + v = 1.97246673 + -0.625 Combine like terms: 0.625 + -0.625 = 0.000 0.000 + v = 1.97246673 + -0.625 v = 1.97246673 + -0.625 Combine like terms: 1.97246673 + -0.625 = 1.34746673 v = 1.34746673 Simplifying v = 1.34746673

Subproblem 2

v + 0.625 = -1.97246673 Simplifying v + 0.625 = -1.97246673 Reorder the terms: 0.625 + v = -1.97246673 Solving 0.625 + v = -1.97246673 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-0.625' to each side of the equation. 0.625 + -0.625 + v = -1.97246673 + -0.625 Combine like terms: 0.625 + -0.625 = 0.000 0.000 + v = -1.97246673 + -0.625 v = -1.97246673 + -0.625 Combine like terms: -1.97246673 + -0.625 = -2.59746673 v = -2.59746673 Simplifying v = -2.59746673

Solution

The solution to the problem is based on the solutions from the subproblems. v = {1.34746673, -2.59746673}

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