3x^2-16x=2x^2-5x-6

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Solution for 3x^2-16x=2x^2-5x-6 equation:


Simplifying
3x2 + -16x = 2x2 + -5x + -6

Reorder the terms:
-16x + 3x2 = 2x2 + -5x + -6

Reorder the terms:
-16x + 3x2 = -6 + -5x + 2x2

Solving
-16x + 3x2 = -6 + -5x + 2x2

Solving for variable 'x'.

Reorder the terms:
6 + -16x + 5x + 3x2 + -2x2 = -6 + -5x + 2x2 + 6 + 5x + -2x2

Combine like terms: -16x + 5x = -11x
6 + -11x + 3x2 + -2x2 = -6 + -5x + 2x2 + 6 + 5x + -2x2

Combine like terms: 3x2 + -2x2 = 1x2
6 + -11x + 1x2 = -6 + -5x + 2x2 + 6 + 5x + -2x2

Reorder the terms:
6 + -11x + 1x2 = -6 + 6 + -5x + 5x + 2x2 + -2x2

Combine like terms: -6 + 6 = 0
6 + -11x + 1x2 = 0 + -5x + 5x + 2x2 + -2x2
6 + -11x + 1x2 = -5x + 5x + 2x2 + -2x2

Combine like terms: -5x + 5x = 0
6 + -11x + 1x2 = 0 + 2x2 + -2x2
6 + -11x + 1x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
6 + -11x + 1x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-6' to each side of the equation.
6 + -11x + -6 + x2 = 0 + -6

Reorder the terms:
6 + -6 + -11x + x2 = 0 + -6

Combine like terms: 6 + -6 = 0
0 + -11x + x2 = 0 + -6
-11x + x2 = 0 + -6

Combine like terms: 0 + -6 = -6
-11x + x2 = -6

The x term is -11x.  Take half its coefficient (-5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
-11x + 30.25 + x2 = -6 + 30.25

Reorder the terms:
30.25 + -11x + x2 = -6 + 30.25

Combine like terms: -6 + 30.25 = 24.25
30.25 + -11x + x2 = 24.25

Factor a perfect square on the left side:
(x + -5.5)(x + -5.5) = 24.25

Calculate the square root of the right side: 4.924428901

Break this problem into two subproblems by setting 
(x + -5.5) equal to 4.924428901 and -4.924428901.

Subproblem 1

x + -5.5 = 4.924428901 Simplifying x + -5.5 = 4.924428901 Reorder the terms: -5.5 + x = 4.924428901 Solving -5.5 + x = 4.924428901 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = 4.924428901 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = 4.924428901 + 5.5 x = 4.924428901 + 5.5 Combine like terms: 4.924428901 + 5.5 = 10.424428901 x = 10.424428901 Simplifying x = 10.424428901

Subproblem 2

x + -5.5 = -4.924428901 Simplifying x + -5.5 = -4.924428901 Reorder the terms: -5.5 + x = -4.924428901 Solving -5.5 + x = -4.924428901 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = -4.924428901 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = -4.924428901 + 5.5 x = -4.924428901 + 5.5 Combine like terms: -4.924428901 + 5.5 = 0.575571099 x = 0.575571099 Simplifying x = 0.575571099

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.424428901, 0.575571099}

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