5x^2+22x-46=0

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Solution for 5x^2+22x-46=0 equation:


Simplifying
5x2 + 22x + -46 = 0

Reorder the terms:
-46 + 22x + 5x2 = 0

Solving
-46 + 22x + 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'.
-9.2 + 4.4x + x2 = 0

Move the constant term to the right:

Add '9.2' to each side of the equation.
-9.2 + 4.4x + 9.2 + x2 = 0 + 9.2

Reorder the terms:
-9.2 + 9.2 + 4.4x + x2 = 0 + 9.2

Combine like terms: -9.2 + 9.2 = 0.0
0.0 + 4.4x + x2 = 0 + 9.2
4.4x + x2 = 0 + 9.2

Combine like terms: 0 + 9.2 = 9.2
4.4x + x2 = 9.2

The x term is 4.4x.  Take half its coefficient (2.2).
Square it (4.84) and add it to both sides.

Add '4.84' to each side of the equation.
4.4x + 4.84 + x2 = 9.2 + 4.84

Reorder the terms:
4.84 + 4.4x + x2 = 9.2 + 4.84

Combine like terms: 9.2 + 4.84 = 14.04
4.84 + 4.4x + x2 = 14.04

Factor a perfect square on the left side:
(x + 2.2)(x + 2.2) = 14.04

Calculate the square root of the right side: 3.746998799

Break this problem into two subproblems by setting 
(x + 2.2) equal to 3.746998799 and -3.746998799.

Subproblem 1

x + 2.2 = 3.746998799 Simplifying x + 2.2 = 3.746998799 Reorder the terms: 2.2 + x = 3.746998799 Solving 2.2 + x = 3.746998799 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.2' to each side of the equation. 2.2 + -2.2 + x = 3.746998799 + -2.2 Combine like terms: 2.2 + -2.2 = 0.0 0.0 + x = 3.746998799 + -2.2 x = 3.746998799 + -2.2 Combine like terms: 3.746998799 + -2.2 = 1.546998799 x = 1.546998799 Simplifying x = 1.546998799

Subproblem 2

x + 2.2 = -3.746998799 Simplifying x + 2.2 = -3.746998799 Reorder the terms: 2.2 + x = -3.746998799 Solving 2.2 + x = -3.746998799 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.2' to each side of the equation. 2.2 + -2.2 + x = -3.746998799 + -2.2 Combine like terms: 2.2 + -2.2 = 0.0 0.0 + x = -3.746998799 + -2.2 x = -3.746998799 + -2.2 Combine like terms: -3.746998799 + -2.2 = -5.946998799 x = -5.946998799 Simplifying x = -5.946998799

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.546998799, -5.946998799}

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