x^2+10x+2=2x+5

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Solution for x^2+10x+2=2x+5 equation:


Simplifying
x2 + 10x + 2 = 2x + 5

Reorder the terms:
2 + 10x + x2 = 2x + 5

Reorder the terms:
2 + 10x + x2 = 5 + 2x

Solving
2 + 10x + x2 = 5 + 2x

Solving for variable 'x'.

Reorder the terms:
2 + -5 + 10x + -2x + x2 = 5 + 2x + -5 + -2x

Combine like terms: 2 + -5 = -3
-3 + 10x + -2x + x2 = 5 + 2x + -5 + -2x

Combine like terms: 10x + -2x = 8x
-3 + 8x + x2 = 5 + 2x + -5 + -2x

Reorder the terms:
-3 + 8x + x2 = 5 + -5 + 2x + -2x

Combine like terms: 5 + -5 = 0
-3 + 8x + x2 = 0 + 2x + -2x
-3 + 8x + x2 = 2x + -2x

Combine like terms: 2x + -2x = 0
-3 + 8x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + 8x + 3 + x2 = 0 + 3

Reorder the terms:
-3 + 3 + 8x + x2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 8x + x2 = 0 + 3
8x + x2 = 0 + 3

Combine like terms: 0 + 3 = 3
8x + x2 = 3

The x term is 8x.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x + 16 + x2 = 3 + 16

Reorder the terms:
16 + 8x + x2 = 3 + 16

Combine like terms: 3 + 16 = 19
16 + 8x + x2 = 19

Factor a perfect square on the left side:
(x + 4)(x + 4) = 19

Calculate the square root of the right side: 4.358898944

Break this problem into two subproblems by setting 
(x + 4) equal to 4.358898944 and -4.358898944.

Subproblem 1

x + 4 = 4.358898944 Simplifying x + 4 = 4.358898944 Reorder the terms: 4 + x = 4.358898944 Solving 4 + x = 4.358898944 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 4.358898944 + -4 Combine like terms: 4 + -4 = 0 0 + x = 4.358898944 + -4 x = 4.358898944 + -4 Combine like terms: 4.358898944 + -4 = 0.358898944 x = 0.358898944 Simplifying x = 0.358898944

Subproblem 2

x + 4 = -4.358898944 Simplifying x + 4 = -4.358898944 Reorder the terms: 4 + x = -4.358898944 Solving 4 + x = -4.358898944 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -4.358898944 + -4 Combine like terms: 4 + -4 = 0 0 + x = -4.358898944 + -4 x = -4.358898944 + -4 Combine like terms: -4.358898944 + -4 = -8.358898944 x = -8.358898944 Simplifying x = -8.358898944

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.358898944, -8.358898944}

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