4x(2x+3)=3(2x+5)+2

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Solution for 4x(2x+3)=3(2x+5)+2 equation:


Simplifying
4x(2x + 3) = 3(2x + 5) + 2

Reorder the terms:
4x(3 + 2x) = 3(2x + 5) + 2
(3 * 4x + 2x * 4x) = 3(2x + 5) + 2
(12x + 8x2) = 3(2x + 5) + 2

Reorder the terms:
12x + 8x2 = 3(5 + 2x) + 2
12x + 8x2 = (5 * 3 + 2x * 3) + 2
12x + 8x2 = (15 + 6x) + 2

Reorder the terms:
12x + 8x2 = 15 + 2 + 6x

Combine like terms: 15 + 2 = 17
12x + 8x2 = 17 + 6x

Solving
12x + 8x2 = 17 + 6x

Solving for variable 'x'.

Reorder the terms:
-17 + 12x + -6x + 8x2 = 17 + 6x + -17 + -6x

Combine like terms: 12x + -6x = 6x
-17 + 6x + 8x2 = 17 + 6x + -17 + -6x

Reorder the terms:
-17 + 6x + 8x2 = 17 + -17 + 6x + -6x

Combine like terms: 17 + -17 = 0
-17 + 6x + 8x2 = 0 + 6x + -6x
-17 + 6x + 8x2 = 6x + -6x

Combine like terms: 6x + -6x = 0
-17 + 6x + 8x2 = 0

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

Divide each side by '8'.
-2.125 + 0.75x + x2 = 0

Move the constant term to the right:

Add '2.125' to each side of the equation.
-2.125 + 0.75x + 2.125 + x2 = 0 + 2.125

Reorder the terms:
-2.125 + 2.125 + 0.75x + x2 = 0 + 2.125

Combine like terms: -2.125 + 2.125 = 0.000
0.000 + 0.75x + x2 = 0 + 2.125
0.75x + x2 = 0 + 2.125

Combine like terms: 0 + 2.125 = 2.125
0.75x + x2 = 2.125

The x term is 0.75x.  Take half its coefficient (0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
0.75x + 0.140625 + x2 = 2.125 + 0.140625

Reorder the terms:
0.140625 + 0.75x + x2 = 2.125 + 0.140625

Combine like terms: 2.125 + 0.140625 = 2.265625
0.140625 + 0.75x + x2 = 2.265625

Factor a perfect square on the left side:
(x + 0.375)(x + 0.375) = 2.265625

Calculate the square root of the right side: 1.505199322

Break this problem into two subproblems by setting 
(x + 0.375) equal to 1.505199322 and -1.505199322.

Subproblem 1

x + 0.375 = 1.505199322 Simplifying x + 0.375 = 1.505199322 Reorder the terms: 0.375 + x = 1.505199322 Solving 0.375 + x = 1.505199322 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.375' to each side of the equation. 0.375 + -0.375 + x = 1.505199322 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + x = 1.505199322 + -0.375 x = 1.505199322 + -0.375 Combine like terms: 1.505199322 + -0.375 = 1.130199322 x = 1.130199322 Simplifying x = 1.130199322

Subproblem 2

x + 0.375 = -1.505199322 Simplifying x + 0.375 = -1.505199322 Reorder the terms: 0.375 + x = -1.505199322 Solving 0.375 + x = -1.505199322 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.375' to each side of the equation. 0.375 + -0.375 + x = -1.505199322 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + x = -1.505199322 + -0.375 x = -1.505199322 + -0.375 Combine like terms: -1.505199322 + -0.375 = -1.880199322 x = -1.880199322 Simplifying x = -1.880199322

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.130199322, -1.880199322}

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