3x^2-16x=4x^2-3x-6

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Solution for 3x^2-16x=4x^2-3x-6 equation:


Simplifying
3x2 + -16x = 4x2 + -3x + -6

Reorder the terms:
-16x + 3x2 = 4x2 + -3x + -6

Reorder the terms:
-16x + 3x2 = -6 + -3x + 4x2

Solving
-16x + 3x2 = -6 + -3x + 4x2

Solving for variable 'x'.

Reorder the terms:
6 + -16x + 3x + 3x2 + -4x2 = -6 + -3x + 4x2 + 6 + 3x + -4x2

Combine like terms: -16x + 3x = -13x
6 + -13x + 3x2 + -4x2 = -6 + -3x + 4x2 + 6 + 3x + -4x2

Combine like terms: 3x2 + -4x2 = -1x2
6 + -13x + -1x2 = -6 + -3x + 4x2 + 6 + 3x + -4x2

Reorder the terms:
6 + -13x + -1x2 = -6 + 6 + -3x + 3x + 4x2 + -4x2

Combine like terms: -6 + 6 = 0
6 + -13x + -1x2 = 0 + -3x + 3x + 4x2 + -4x2
6 + -13x + -1x2 = -3x + 3x + 4x2 + -4x2

Combine like terms: -3x + 3x = 0
6 + -13x + -1x2 = 0 + 4x2 + -4x2
6 + -13x + -1x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
6 + -13x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-6 + 13x + x2 = 0

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + 13x + 6 + x2 = 0 + 6

Reorder the terms:
-6 + 6 + 13x + x2 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + 13x + x2 = 0 + 6
13x + x2 = 0 + 6

Combine like terms: 0 + 6 = 6
13x + x2 = 6

The x term is 13x.  Take half its coefficient (6.5).
Square it (42.25) and add it to both sides.

Add '42.25' to each side of the equation.
13x + 42.25 + x2 = 6 + 42.25

Reorder the terms:
42.25 + 13x + x2 = 6 + 42.25

Combine like terms: 6 + 42.25 = 48.25
42.25 + 13x + x2 = 48.25

Factor a perfect square on the left side:
(x + 6.5)(x + 6.5) = 48.25

Calculate the square root of the right side: 6.946221995

Break this problem into two subproblems by setting 
(x + 6.5) equal to 6.946221995 and -6.946221995.

Subproblem 1

x + 6.5 = 6.946221995 Simplifying x + 6.5 = 6.946221995 Reorder the terms: 6.5 + x = 6.946221995 Solving 6.5 + x = 6.946221995 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6.5' to each side of the equation. 6.5 + -6.5 + x = 6.946221995 + -6.5 Combine like terms: 6.5 + -6.5 = 0.0 0.0 + x = 6.946221995 + -6.5 x = 6.946221995 + -6.5 Combine like terms: 6.946221995 + -6.5 = 0.446221995 x = 0.446221995 Simplifying x = 0.446221995

Subproblem 2

x + 6.5 = -6.946221995 Simplifying x + 6.5 = -6.946221995 Reorder the terms: 6.5 + x = -6.946221995 Solving 6.5 + x = -6.946221995 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6.5' to each side of the equation. 6.5 + -6.5 + x = -6.946221995 + -6.5 Combine like terms: 6.5 + -6.5 = 0.0 0.0 + x = -6.946221995 + -6.5 x = -6.946221995 + -6.5 Combine like terms: -6.946221995 + -6.5 = -13.446221995 x = -13.446221995 Simplifying x = -13.446221995

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.446221995, -13.446221995}

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