x^2+4=(3x-1)2

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Solution for x^2+4=(3x-1)2 equation:


Simplifying
x2 + 4 = (3x + -1) * 2

Reorder the terms:
4 + x2 = (3x + -1) * 2

Reorder the terms:
4 + x2 = (-1 + 3x) * 2

Reorder the terms for easier multiplication:
4 + x2 = 2(-1 + 3x)
4 + x2 = (-1 * 2 + 3x * 2)
4 + x2 = (-2 + 6x)

Solving
4 + x2 = -2 + 6x

Solving for variable 'x'.

Reorder the terms:
4 + 2 + -6x + x2 = -2 + 6x + 2 + -6x

Combine like terms: 4 + 2 = 6
6 + -6x + x2 = -2 + 6x + 2 + -6x

Reorder the terms:
6 + -6x + x2 = -2 + 2 + 6x + -6x

Combine like terms: -2 + 2 = 0
6 + -6x + x2 = 0 + 6x + -6x
6 + -6x + x2 = 6x + -6x

Combine like terms: 6x + -6x = 0
6 + -6x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-6' to each side of the equation.
6 + -6x + -6 + x2 = 0 + -6

Reorder the terms:
6 + -6 + -6x + x2 = 0 + -6

Combine like terms: 6 + -6 = 0
0 + -6x + x2 = 0 + -6
-6x + x2 = 0 + -6

Combine like terms: 0 + -6 = -6
-6x + x2 = -6

The x term is -6x.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6x + 9 + x2 = -6 + 9

Reorder the terms:
9 + -6x + x2 = -6 + 9

Combine like terms: -6 + 9 = 3
9 + -6x + x2 = 3

Factor a perfect square on the left side:
(x + -3)(x + -3) = 3

Calculate the square root of the right side: 1.732050808

Break this problem into two subproblems by setting 
(x + -3) equal to 1.732050808 and -1.732050808.

Subproblem 1

x + -3 = 1.732050808 Simplifying x + -3 = 1.732050808 Reorder the terms: -3 + x = 1.732050808 Solving -3 + x = 1.732050808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 1.732050808 + 3 Combine like terms: -3 + 3 = 0 0 + x = 1.732050808 + 3 x = 1.732050808 + 3 Combine like terms: 1.732050808 + 3 = 4.732050808 x = 4.732050808 Simplifying x = 4.732050808

Subproblem 2

x + -3 = -1.732050808 Simplifying x + -3 = -1.732050808 Reorder the terms: -3 + x = -1.732050808 Solving -3 + x = -1.732050808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -1.732050808 + 3 Combine like terms: -3 + 3 = 0 0 + x = -1.732050808 + 3 x = -1.732050808 + 3 Combine like terms: -1.732050808 + 3 = 1.267949192 x = 1.267949192 Simplifying x = 1.267949192

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.732050808, 1.267949192}

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