4x^2-6x+16=3(2x+3)

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


Simplifying
4x2 + -6x + 16 = 3(2x + 3)

Reorder the terms:
16 + -6x + 4x2 = 3(2x + 3)

Reorder the terms:
16 + -6x + 4x2 = 3(3 + 2x)
16 + -6x + 4x2 = (3 * 3 + 2x * 3)
16 + -6x + 4x2 = (9 + 6x)

Solving
16 + -6x + 4x2 = 9 + 6x

Solving for variable 'x'.

Reorder the terms:
16 + -9 + -6x + -6x + 4x2 = 9 + 6x + -9 + -6x

Combine like terms: 16 + -9 = 7
7 + -6x + -6x + 4x2 = 9 + 6x + -9 + -6x

Combine like terms: -6x + -6x = -12x
7 + -12x + 4x2 = 9 + 6x + -9 + -6x

Reorder the terms:
7 + -12x + 4x2 = 9 + -9 + 6x + -6x

Combine like terms: 9 + -9 = 0
7 + -12x + 4x2 = 0 + 6x + -6x
7 + -12x + 4x2 = 6x + -6x

Combine like terms: 6x + -6x = 0
7 + -12x + 4x2 = 0

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

Divide each side by '4'.
1.75 + -3x + x2 = 0

Move the constant term to the right:

Add '-1.75' to each side of the equation.
1.75 + -3x + -1.75 + x2 = 0 + -1.75

Reorder the terms:
1.75 + -1.75 + -3x + x2 = 0 + -1.75

Combine like terms: 1.75 + -1.75 = 0.00
0.00 + -3x + x2 = 0 + -1.75
-3x + x2 = 0 + -1.75

Combine like terms: 0 + -1.75 = -1.75
-3x + x2 = -1.75

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 = -1.75 + 2.25

Reorder the terms:
2.25 + -3x + x2 = -1.75 + 2.25

Combine like terms: -1.75 + 2.25 = 0.5
2.25 + -3x + x2 = 0.5

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 0.5

Calculate the square root of the right side: 0.707106781

Break this problem into two subproblems by setting 
(x + -1.5) equal to 0.707106781 and -0.707106781.

Subproblem 1

x + -1.5 = 0.707106781 Simplifying x + -1.5 = 0.707106781 Reorder the terms: -1.5 + x = 0.707106781 Solving -1.5 + x = 0.707106781 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 = 0.707106781 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 0.707106781 + 1.5 x = 0.707106781 + 1.5 Combine like terms: 0.707106781 + 1.5 = 2.207106781 x = 2.207106781 Simplifying x = 2.207106781

Subproblem 2

x + -1.5 = -0.707106781 Simplifying x + -1.5 = -0.707106781 Reorder the terms: -1.5 + x = -0.707106781 Solving -1.5 + x = -0.707106781 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 = -0.707106781 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -0.707106781 + 1.5 x = -0.707106781 + 1.5 Combine like terms: -0.707106781 + 1.5 = 0.792893219 x = 0.792893219 Simplifying x = 0.792893219

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.207106781, 0.792893219}

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