5x^2+26x-22=0

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Solution for 5x^2+26x-22=0 equation:


Simplifying
5x2 + 26x + -22 = 0

Reorder the terms:
-22 + 26x + 5x2 = 0

Solving
-22 + 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'.
-4.4 + 5.2x + x2 = 0

Move the constant term to the right:

Add '4.4' to each side of the equation.
-4.4 + 5.2x + 4.4 + x2 = 0 + 4.4

Reorder the terms:
-4.4 + 4.4 + 5.2x + x2 = 0 + 4.4

Combine like terms: -4.4 + 4.4 = 0.0
0.0 + 5.2x + x2 = 0 + 4.4
5.2x + x2 = 0 + 4.4

Combine like terms: 0 + 4.4 = 4.4
5.2x + x2 = 4.4

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 = 4.4 + 6.76

Reorder the terms:
6.76 + 5.2x + x2 = 4.4 + 6.76

Combine like terms: 4.4 + 6.76 = 11.16
6.76 + 5.2x + x2 = 11.16

Factor a perfect square on the left side:
(x + 2.6)(x + 2.6) = 11.16

Calculate the square root of the right side: 3.340658618

Break this problem into two subproblems by setting 
(x + 2.6) equal to 3.340658618 and -3.340658618.

Subproblem 1

x + 2.6 = 3.340658618 Simplifying x + 2.6 = 3.340658618 Reorder the terms: 2.6 + x = 3.340658618 Solving 2.6 + x = 3.340658618 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 = 3.340658618 + -2.6 Combine like terms: 2.6 + -2.6 = 0.0 0.0 + x = 3.340658618 + -2.6 x = 3.340658618 + -2.6 Combine like terms: 3.340658618 + -2.6 = 0.740658618 x = 0.740658618 Simplifying x = 0.740658618

Subproblem 2

x + 2.6 = -3.340658618 Simplifying x + 2.6 = -3.340658618 Reorder the terms: 2.6 + x = -3.340658618 Solving 2.6 + x = -3.340658618 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 = -3.340658618 + -2.6 Combine like terms: 2.6 + -2.6 = 0.0 0.0 + x = -3.340658618 + -2.6 x = -3.340658618 + -2.6 Combine like terms: -3.340658618 + -2.6 = -5.940658618 x = -5.940658618 Simplifying x = -5.940658618

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.740658618, -5.940658618}

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