(x^2+10x+25)-(x+5)=3

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Solution for (x^2+10x+25)-(x+5)=3 equation:


Simplifying
(x2 + 10x + 25) + -1(x + 5) = 3

Reorder the terms:
(25 + 10x + x2) + -1(x + 5) = 3

Remove parenthesis around (25 + 10x + x2)
25 + 10x + x2 + -1(x + 5) = 3

Reorder the terms:
25 + 10x + x2 + -1(5 + x) = 3
25 + 10x + x2 + (5 * -1 + x * -1) = 3
25 + 10x + x2 + (-5 + -1x) = 3

Reorder the terms:
25 + -5 + 10x + -1x + x2 = 3

Combine like terms: 25 + -5 = 20
20 + 10x + -1x + x2 = 3

Combine like terms: 10x + -1x = 9x
20 + 9x + x2 = 3

Solving
20 + 9x + x2 = 3

Solving for variable 'x'.

Reorder the terms:
20 + -3 + 9x + x2 = 3 + -3

Combine like terms: 20 + -3 = 17
17 + 9x + x2 = 3 + -3

Combine like terms: 3 + -3 = 0
17 + 9x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-17' to each side of the equation.
17 + 9x + -17 + x2 = 0 + -17

Reorder the terms:
17 + -17 + 9x + x2 = 0 + -17

Combine like terms: 17 + -17 = 0
0 + 9x + x2 = 0 + -17
9x + x2 = 0 + -17

Combine like terms: 0 + -17 = -17
9x + x2 = -17

The x term is 9x.  Take half its coefficient (4.5).
Square it (20.25) and add it to both sides.

Add '20.25' to each side of the equation.
9x + 20.25 + x2 = -17 + 20.25

Reorder the terms:
20.25 + 9x + x2 = -17 + 20.25

Combine like terms: -17 + 20.25 = 3.25
20.25 + 9x + x2 = 3.25

Factor a perfect square on the left side:
(x + 4.5)(x + 4.5) = 3.25

Calculate the square root of the right side: 1.802775638

Break this problem into two subproblems by setting 
(x + 4.5) equal to 1.802775638 and -1.802775638.

Subproblem 1

x + 4.5 = 1.802775638 Simplifying x + 4.5 = 1.802775638 Reorder the terms: 4.5 + x = 1.802775638 Solving 4.5 + x = 1.802775638 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.5' to each side of the equation. 4.5 + -4.5 + x = 1.802775638 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + x = 1.802775638 + -4.5 x = 1.802775638 + -4.5 Combine like terms: 1.802775638 + -4.5 = -2.697224362 x = -2.697224362 Simplifying x = -2.697224362

Subproblem 2

x + 4.5 = -1.802775638 Simplifying x + 4.5 = -1.802775638 Reorder the terms: 4.5 + x = -1.802775638 Solving 4.5 + x = -1.802775638 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.5' to each side of the equation. 4.5 + -4.5 + x = -1.802775638 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + x = -1.802775638 + -4.5 x = -1.802775638 + -4.5 Combine like terms: -1.802775638 + -4.5 = -6.302775638 x = -6.302775638 Simplifying x = -6.302775638

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-2.697224362, -6.302775638}

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