v^2-2v-57=-4

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Solution for v^2-2v-57=-4 equation:


Simplifying
v2 + -2v + -57 = -4

Reorder the terms:
-57 + -2v + v2 = -4

Solving
-57 + -2v + v2 = -4

Solving for variable 'v'.

Reorder the terms:
-57 + 4 + -2v + v2 = -4 + 4

Combine like terms: -57 + 4 = -53
-53 + -2v + v2 = -4 + 4

Combine like terms: -4 + 4 = 0
-53 + -2v + v2 = 0

Begin completing the square.

Move the constant term to the right:

Add '53' to each side of the equation.
-53 + -2v + 53 + v2 = 0 + 53

Reorder the terms:
-53 + 53 + -2v + v2 = 0 + 53

Combine like terms: -53 + 53 = 0
0 + -2v + v2 = 0 + 53
-2v + v2 = 0 + 53

Combine like terms: 0 + 53 = 53
-2v + v2 = 53

The v term is -2v.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2v + 1 + v2 = 53 + 1

Reorder the terms:
1 + -2v + v2 = 53 + 1

Combine like terms: 53 + 1 = 54
1 + -2v + v2 = 54

Factor a perfect square on the left side:
(v + -1)(v + -1) = 54

Calculate the square root of the right side: 7.348469228

Break this problem into two subproblems by setting 
(v + -1) equal to 7.348469228 and -7.348469228.

Subproblem 1

v + -1 = 7.348469228 Simplifying v + -1 = 7.348469228 Reorder the terms: -1 + v = 7.348469228 Solving -1 + v = 7.348469228 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + v = 7.348469228 + 1 Combine like terms: -1 + 1 = 0 0 + v = 7.348469228 + 1 v = 7.348469228 + 1 Combine like terms: 7.348469228 + 1 = 8.348469228 v = 8.348469228 Simplifying v = 8.348469228

Subproblem 2

v + -1 = -7.348469228 Simplifying v + -1 = -7.348469228 Reorder the terms: -1 + v = -7.348469228 Solving -1 + v = -7.348469228 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + v = -7.348469228 + 1 Combine like terms: -1 + 1 = 0 0 + v = -7.348469228 + 1 v = -7.348469228 + 1 Combine like terms: -7.348469228 + 1 = -6.348469228 v = -6.348469228 Simplifying v = -6.348469228

Solution

The solution to the problem is based on the solutions from the subproblems. v = {8.348469228, -6.348469228}

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