2x^2+7x-52=0

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Solution for 2x^2+7x-52=0 equation:


Simplifying
2x2 + 7x + -52 = 0

Reorder the terms:
-52 + 7x + 2x2 = 0

Solving
-52 + 7x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-26 + 3.5x + x2 = 0

Move the constant term to the right:

Add '26' to each side of the equation.
-26 + 3.5x + 26 + x2 = 0 + 26

Reorder the terms:
-26 + 26 + 3.5x + x2 = 0 + 26

Combine like terms: -26 + 26 = 0
0 + 3.5x + x2 = 0 + 26
3.5x + x2 = 0 + 26

Combine like terms: 0 + 26 = 26
3.5x + x2 = 26

The x term is 3.5x.  Take half its coefficient (1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
3.5x + 3.0625 + x2 = 26 + 3.0625

Reorder the terms:
3.0625 + 3.5x + x2 = 26 + 3.0625

Combine like terms: 26 + 3.0625 = 29.0625
3.0625 + 3.5x + x2 = 29.0625

Factor a perfect square on the left side:
(x + 1.75)(x + 1.75) = 29.0625

Calculate the square root of the right side: 5.390964663

Break this problem into two subproblems by setting 
(x + 1.75) equal to 5.390964663 and -5.390964663.

Subproblem 1

x + 1.75 = 5.390964663 Simplifying x + 1.75 = 5.390964663 Reorder the terms: 1.75 + x = 5.390964663 Solving 1.75 + x = 5.390964663 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + x = 5.390964663 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = 5.390964663 + -1.75 x = 5.390964663 + -1.75 Combine like terms: 5.390964663 + -1.75 = 3.640964663 x = 3.640964663 Simplifying x = 3.640964663

Subproblem 2

x + 1.75 = -5.390964663 Simplifying x + 1.75 = -5.390964663 Reorder the terms: 1.75 + x = -5.390964663 Solving 1.75 + x = -5.390964663 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + x = -5.390964663 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = -5.390964663 + -1.75 x = -5.390964663 + -1.75 Combine like terms: -5.390964663 + -1.75 = -7.140964663 x = -7.140964663 Simplifying x = -7.140964663

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.640964663, -7.140964663}

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