7v^2-53v-27=3

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Solution for 7v^2-53v-27=3 equation:


Simplifying
7v2 + -53v + -27 = 3

Reorder the terms:
-27 + -53v + 7v2 = 3

Solving
-27 + -53v + 7v2 = 3

Solving for variable 'v'.

Reorder the terms:
-27 + -3 + -53v + 7v2 = 3 + -3

Combine like terms: -27 + -3 = -30
-30 + -53v + 7v2 = 3 + -3

Combine like terms: 3 + -3 = 0
-30 + -53v + 7v2 = 0

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

Divide each side by '7'.
-4.285714286 + -7.571428571v + v2 = 0

Move the constant term to the right:

Add '4.285714286' to each side of the equation.
-4.285714286 + -7.571428571v + 4.285714286 + v2 = 0 + 4.285714286

Reorder the terms:
-4.285714286 + 4.285714286 + -7.571428571v + v2 = 0 + 4.285714286

Combine like terms: -4.285714286 + 4.285714286 = 0.000000000
0.000000000 + -7.571428571v + v2 = 0 + 4.285714286
-7.571428571v + v2 = 0 + 4.285714286

Combine like terms: 0 + 4.285714286 = 4.285714286
-7.571428571v + v2 = 4.285714286

The v term is -7.571428571v.  Take half its coefficient (-3.785714286).
Square it (14.33163266) and add it to both sides.

Add '14.33163266' to each side of the equation.
-7.571428571v + 14.33163266 + v2 = 4.285714286 + 14.33163266

Reorder the terms:
14.33163266 + -7.571428571v + v2 = 4.285714286 + 14.33163266

Combine like terms: 4.285714286 + 14.33163266 = 18.617346946
14.33163266 + -7.571428571v + v2 = 18.617346946

Factor a perfect square on the left side:
(v + -3.785714286)(v + -3.785714286) = 18.617346946

Calculate the square root of the right side: 4.314782375

Break this problem into two subproblems by setting 
(v + -3.785714286) equal to 4.314782375 and -4.314782375.

Subproblem 1

v + -3.785714286 = 4.314782375 Simplifying v + -3.785714286 = 4.314782375 Reorder the terms: -3.785714286 + v = 4.314782375 Solving -3.785714286 + v = 4.314782375 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '3.785714286' to each side of the equation. -3.785714286 + 3.785714286 + v = 4.314782375 + 3.785714286 Combine like terms: -3.785714286 + 3.785714286 = 0.000000000 0.000000000 + v = 4.314782375 + 3.785714286 v = 4.314782375 + 3.785714286 Combine like terms: 4.314782375 + 3.785714286 = 8.100496661 v = 8.100496661 Simplifying v = 8.100496661

Subproblem 2

v + -3.785714286 = -4.314782375 Simplifying v + -3.785714286 = -4.314782375 Reorder the terms: -3.785714286 + v = -4.314782375 Solving -3.785714286 + v = -4.314782375 Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '3.785714286' to each side of the equation. -3.785714286 + 3.785714286 + v = -4.314782375 + 3.785714286 Combine like terms: -3.785714286 + 3.785714286 = 0.000000000 0.000000000 + v = -4.314782375 + 3.785714286 v = -4.314782375 + 3.785714286 Combine like terms: -4.314782375 + 3.785714286 = -0.529068089 v = -0.529068089 Simplifying v = -0.529068089

Solution

The solution to the problem is based on the solutions from the subproblems. v = {8.100496661, -0.529068089}

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