5x^2+26x-236=0

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Solution for 5x^2+26x-236=0 equation:


Simplifying
5x2 + 26x + -236 = 0

Reorder the terms:
-236 + 26x + 5x2 = 0

Solving
-236 + 26x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
-47.2 + 5.2x + x2 = 0

Move the constant term to the right:

Add '47.2' to each side of the equation.
-47.2 + 5.2x + 47.2 + x2 = 0 + 47.2

Reorder the terms:
-47.2 + 47.2 + 5.2x + x2 = 0 + 47.2

Combine like terms: -47.2 + 47.2 = 0.0
0.0 + 5.2x + x2 = 0 + 47.2
5.2x + x2 = 0 + 47.2

Combine like terms: 0 + 47.2 = 47.2
5.2x + x2 = 47.2

The x term is 5.2x.  Take half its coefficient (2.6).
Square it (6.76) and add it to both sides.

Add '6.76' to each side of the equation.
5.2x + 6.76 + x2 = 47.2 + 6.76

Reorder the terms:
6.76 + 5.2x + x2 = 47.2 + 6.76

Combine like terms: 47.2 + 6.76 = 53.96
6.76 + 5.2x + x2 = 53.96

Factor a perfect square on the left side:
(x + 2.6)(x + 2.6) = 53.96

Calculate the square root of the right side: 7.345747069

Break this problem into two subproblems by setting 
(x + 2.6) equal to 7.345747069 and -7.345747069.

Subproblem 1

x + 2.6 = 7.345747069 Simplifying x + 2.6 = 7.345747069 Reorder the terms: 2.6 + x = 7.345747069 Solving 2.6 + x = 7.345747069 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.6' to each side of the equation. 2.6 + -2.6 + x = 7.345747069 + -2.6 Combine like terms: 2.6 + -2.6 = 0.0 0.0 + x = 7.345747069 + -2.6 x = 7.345747069 + -2.6 Combine like terms: 7.345747069 + -2.6 = 4.745747069 x = 4.745747069 Simplifying x = 4.745747069

Subproblem 2

x + 2.6 = -7.345747069 Simplifying x + 2.6 = -7.345747069 Reorder the terms: 2.6 + x = -7.345747069 Solving 2.6 + x = -7.345747069 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.6' to each side of the equation. 2.6 + -2.6 + x = -7.345747069 + -2.6 Combine like terms: 2.6 + -2.6 = 0.0 0.0 + x = -7.345747069 + -2.6 x = -7.345747069 + -2.6 Combine like terms: -7.345747069 + -2.6 = -9.945747069 x = -9.945747069 Simplifying x = -9.945747069

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.745747069, -9.945747069}

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