x^2-4x=3x^2+4x-2

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


Simplifying
x2 + -4x = 3x2 + 4x + -2

Reorder the terms:
-4x + x2 = 3x2 + 4x + -2

Reorder the terms:
-4x + x2 = -2 + 4x + 3x2

Solving
-4x + x2 = -2 + 4x + 3x2

Solving for variable 'x'.

Reorder the terms:
2 + -4x + -4x + x2 + -3x2 = -2 + 4x + 3x2 + 2 + -4x + -3x2

Combine like terms: -4x + -4x = -8x
2 + -8x + x2 + -3x2 = -2 + 4x + 3x2 + 2 + -4x + -3x2

Combine like terms: x2 + -3x2 = -2x2
2 + -8x + -2x2 = -2 + 4x + 3x2 + 2 + -4x + -3x2

Reorder the terms:
2 + -8x + -2x2 = -2 + 2 + 4x + -4x + 3x2 + -3x2

Combine like terms: -2 + 2 = 0
2 + -8x + -2x2 = 0 + 4x + -4x + 3x2 + -3x2
2 + -8x + -2x2 = 4x + -4x + 3x2 + -3x2

Combine like terms: 4x + -4x = 0
2 + -8x + -2x2 = 0 + 3x2 + -3x2
2 + -8x + -2x2 = 3x2 + -3x2

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

Factor out the Greatest Common Factor (GCF), '2'.
2(1 + -4x + -1x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(1 + -4x + -1x2)' equal to zero and attempt to solve: Simplifying 1 + -4x + -1x2 = 0 Solving 1 + -4x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -1 + 4x + x2 = 0 Move the constant term to the right: Add '1' to each side of the equation. -1 + 4x + 1 + x2 = 0 + 1 Reorder the terms: -1 + 1 + 4x + x2 = 0 + 1 Combine like terms: -1 + 1 = 0 0 + 4x + x2 = 0 + 1 4x + x2 = 0 + 1 Combine like terms: 0 + 1 = 1 4x + x2 = 1 The x term is 4x. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4x + 4 + x2 = 1 + 4 Reorder the terms: 4 + 4x + x2 = 1 + 4 Combine like terms: 1 + 4 = 5 4 + 4x + x2 = 5 Factor a perfect square on the left side: (x + 2)(x + 2) = 5 Calculate the square root of the right side: 2.236067978 Break this problem into two subproblems by setting (x + 2) equal to 2.236067978 and -2.236067978.

Subproblem 1

x + 2 = 2.236067978 Simplifying x + 2 = 2.236067978 Reorder the terms: 2 + x = 2.236067978 Solving 2 + x = 2.236067978 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 2.236067978 + -2 Combine like terms: 2 + -2 = 0 0 + x = 2.236067978 + -2 x = 2.236067978 + -2 Combine like terms: 2.236067978 + -2 = 0.236067978 x = 0.236067978 Simplifying x = 0.236067978

Subproblem 2

x + 2 = -2.236067978 Simplifying x + 2 = -2.236067978 Reorder the terms: 2 + x = -2.236067978 Solving 2 + x = -2.236067978 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -2.236067978 + -2 Combine like terms: 2 + -2 = 0 0 + x = -2.236067978 + -2 x = -2.236067978 + -2 Combine like terms: -2.236067978 + -2 = -4.236067978 x = -4.236067978 Simplifying x = -4.236067978

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.236067978, -4.236067978}

Solution

x = {0.236067978, -4.236067978}

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