146=5x+x^2

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Solution for 146=5x+x^2 equation:


Simplifying
146 = 5x + x2

Solving
146 = 5x + x2

Solving for variable 'x'.

Reorder the terms:
146 + -5x + -1x2 = 5x + -5x + x2 + -1x2

Combine like terms: 5x + -5x = 0
146 + -5x + -1x2 = 0 + x2 + -1x2
146 + -5x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
146 + -5x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-146 + 5x + x2 = 0

Move the constant term to the right:

Add '146' to each side of the equation.
-146 + 5x + 146 + x2 = 0 + 146

Reorder the terms:
-146 + 146 + 5x + x2 = 0 + 146

Combine like terms: -146 + 146 = 0
0 + 5x + x2 = 0 + 146
5x + x2 = 0 + 146

Combine like terms: 0 + 146 = 146
5x + x2 = 146

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 = 146 + 6.25

Reorder the terms:
6.25 + 5x + x2 = 146 + 6.25

Combine like terms: 146 + 6.25 = 152.25
6.25 + 5x + x2 = 152.25

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = 152.25

Calculate the square root of the right side: 12.338962679

Break this problem into two subproblems by setting 
(x + 2.5) equal to 12.338962679 and -12.338962679.

Subproblem 1

x + 2.5 = 12.338962679 Simplifying x + 2.5 = 12.338962679 Reorder the terms: 2.5 + x = 12.338962679 Solving 2.5 + x = 12.338962679 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 = 12.338962679 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 12.338962679 + -2.5 x = 12.338962679 + -2.5 Combine like terms: 12.338962679 + -2.5 = 9.838962679 x = 9.838962679 Simplifying x = 9.838962679

Subproblem 2

x + 2.5 = -12.338962679 Simplifying x + 2.5 = -12.338962679 Reorder the terms: 2.5 + x = -12.338962679 Solving 2.5 + x = -12.338962679 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 = -12.338962679 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -12.338962679 + -2.5 x = -12.338962679 + -2.5 Combine like terms: -12.338962679 + -2.5 = -14.838962679 x = -14.838962679 Simplifying x = -14.838962679

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.838962679, -14.838962679}

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