2x^2+20x-52=3

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Solution for 2x^2+20x-52=3 equation:


Simplifying
2x2 + 20x + -52 = 3

Reorder the terms:
-52 + 20x + 2x2 = 3

Solving
-52 + 20x + 2x2 = 3

Solving for variable 'x'.

Reorder the terms:
-52 + -3 + 20x + 2x2 = 3 + -3

Combine like terms: -52 + -3 = -55
-55 + 20x + 2x2 = 3 + -3

Combine like terms: 3 + -3 = 0
-55 + 20x + 2x2 = 0

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

Divide each side by '2'.
-27.5 + 10x + x2 = 0

Move the constant term to the right:

Add '27.5' to each side of the equation.
-27.5 + 10x + 27.5 + x2 = 0 + 27.5

Reorder the terms:
-27.5 + 27.5 + 10x + x2 = 0 + 27.5

Combine like terms: -27.5 + 27.5 = 0.0
0.0 + 10x + x2 = 0 + 27.5
10x + x2 = 0 + 27.5

Combine like terms: 0 + 27.5 = 27.5
10x + x2 = 27.5

The x term is 10x.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10x + 25 + x2 = 27.5 + 25

Reorder the terms:
25 + 10x + x2 = 27.5 + 25

Combine like terms: 27.5 + 25 = 52.5
25 + 10x + x2 = 52.5

Factor a perfect square on the left side:
(x + 5)(x + 5) = 52.5

Calculate the square root of the right side: 7.245688373

Break this problem into two subproblems by setting 
(x + 5) equal to 7.245688373 and -7.245688373.

Subproblem 1

x + 5 = 7.245688373 Simplifying x + 5 = 7.245688373 Reorder the terms: 5 + x = 7.245688373 Solving 5 + x = 7.245688373 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 7.245688373 + -5 Combine like terms: 5 + -5 = 0 0 + x = 7.245688373 + -5 x = 7.245688373 + -5 Combine like terms: 7.245688373 + -5 = 2.245688373 x = 2.245688373 Simplifying x = 2.245688373

Subproblem 2

x + 5 = -7.245688373 Simplifying x + 5 = -7.245688373 Reorder the terms: 5 + x = -7.245688373 Solving 5 + x = -7.245688373 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -7.245688373 + -5 Combine like terms: 5 + -5 = 0 0 + x = -7.245688373 + -5 x = -7.245688373 + -5 Combine like terms: -7.245688373 + -5 = -12.245688373 x = -12.245688373 Simplifying x = -12.245688373

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.245688373, -12.245688373}

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