x^2+5x-34=0

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Solution for x^2+5x-34=0 equation:


Simplifying
x2 + 5x + -34 = 0

Reorder the terms:
-34 + 5x + x2 = 0

Solving
-34 + 5x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '34' to each side of the equation.
-34 + 5x + 34 + x2 = 0 + 34

Reorder the terms:
-34 + 34 + 5x + x2 = 0 + 34

Combine like terms: -34 + 34 = 0
0 + 5x + x2 = 0 + 34
5x + x2 = 0 + 34

Combine like terms: 0 + 34 = 34
5x + x2 = 34

The x term is 5x.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5x + 6.25 + x2 = 34 + 6.25

Reorder the terms:
6.25 + 5x + x2 = 34 + 6.25

Combine like terms: 34 + 6.25 = 40.25
6.25 + 5x + x2 = 40.25

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = 40.25

Calculate the square root of the right side: 6.34428877

Break this problem into two subproblems by setting 
(x + 2.5) equal to 6.34428877 and -6.34428877.

Subproblem 1

x + 2.5 = 6.34428877 Simplifying x + 2.5 = 6.34428877 Reorder the terms: 2.5 + x = 6.34428877 Solving 2.5 + x = 6.34428877 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = 6.34428877 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 6.34428877 + -2.5 x = 6.34428877 + -2.5 Combine like terms: 6.34428877 + -2.5 = 3.84428877 x = 3.84428877 Simplifying x = 3.84428877

Subproblem 2

x + 2.5 = -6.34428877 Simplifying x + 2.5 = -6.34428877 Reorder the terms: 2.5 + x = -6.34428877 Solving 2.5 + x = -6.34428877 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = -6.34428877 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -6.34428877 + -2.5 x = -6.34428877 + -2.5 Combine like terms: -6.34428877 + -2.5 = -8.84428877 x = -8.84428877 Simplifying x = -8.84428877

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.84428877, -8.84428877}

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