(x+3)*x=52

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Solution for (x+3)*x=52 equation:


Simplifying
(x + 3) * x = 52

Reorder the terms:
(3 + x) * x = 52

Reorder the terms for easier multiplication:
x(3 + x) = 52
(3 * x + x * x) = 52
(3x + x2) = 52

Solving
3x + x2 = 52

Solving for variable 'x'.

Reorder the terms:
-52 + 3x + x2 = 52 + -52

Combine like terms: 52 + -52 = 0
-52 + 3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '52' to each side of the equation.
-52 + 3x + 52 + x2 = 0 + 52

Reorder the terms:
-52 + 52 + 3x + x2 = 0 + 52

Combine like terms: -52 + 52 = 0
0 + 3x + x2 = 0 + 52
3x + x2 = 0 + 52

Combine like terms: 0 + 52 = 52
3x + x2 = 52

The x term is 3x.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3x + 2.25 + x2 = 52 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 52 + 2.25

Combine like terms: 52 + 2.25 = 54.25
2.25 + 3x + x2 = 54.25

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 54.25

Calculate the square root of the right side: 7.365459931

Break this problem into two subproblems by setting 
(x + 1.5) equal to 7.365459931 and -7.365459931.

Subproblem 1

x + 1.5 = 7.365459931 Simplifying x + 1.5 = 7.365459931 Reorder the terms: 1.5 + x = 7.365459931 Solving 1.5 + x = 7.365459931 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 7.365459931 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 7.365459931 + -1.5 x = 7.365459931 + -1.5 Combine like terms: 7.365459931 + -1.5 = 5.865459931 x = 5.865459931 Simplifying x = 5.865459931

Subproblem 2

x + 1.5 = -7.365459931 Simplifying x + 1.5 = -7.365459931 Reorder the terms: 1.5 + x = -7.365459931 Solving 1.5 + x = -7.365459931 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -7.365459931 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -7.365459931 + -1.5 x = -7.365459931 + -1.5 Combine like terms: -7.365459931 + -1.5 = -8.865459931 x = -8.865459931 Simplifying x = -8.865459931

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.865459931, -8.865459931}

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