6(2x-1)(x+3)=49

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Solution for 6(2x-1)(x+3)=49 equation:


Simplifying
6(2x + -1)(x + 3) = 49

Reorder the terms:
6(-1 + 2x)(x + 3) = 49

Reorder the terms:
6(-1 + 2x)(3 + x) = 49

Multiply (-1 + 2x) * (3 + x)
6(-1(3 + x) + 2x * (3 + x)) = 49
6((3 * -1 + x * -1) + 2x * (3 + x)) = 49
6((-3 + -1x) + 2x * (3 + x)) = 49
6(-3 + -1x + (3 * 2x + x * 2x)) = 49
6(-3 + -1x + (6x + 2x2)) = 49

Combine like terms: -1x + 6x = 5x
6(-3 + 5x + 2x2) = 49
(-3 * 6 + 5x * 6 + 2x2 * 6) = 49
(-18 + 30x + 12x2) = 49

Solving
-18 + 30x + 12x2 = 49

Solving for variable 'x'.

Reorder the terms:
-18 + -49 + 30x + 12x2 = 49 + -49

Combine like terms: -18 + -49 = -67
-67 + 30x + 12x2 = 49 + -49

Combine like terms: 49 + -49 = 0
-67 + 30x + 12x2 = 0

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

Divide each side by '12'.
-5.583333333 + 2.5x + x2 = 0

Move the constant term to the right:

Add '5.583333333' to each side of the equation.
-5.583333333 + 2.5x + 5.583333333 + x2 = 0 + 5.583333333

Reorder the terms:
-5.583333333 + 5.583333333 + 2.5x + x2 = 0 + 5.583333333

Combine like terms: -5.583333333 + 5.583333333 = 0.000000000
0.000000000 + 2.5x + x2 = 0 + 5.583333333
2.5x + x2 = 0 + 5.583333333

Combine like terms: 0 + 5.583333333 = 5.583333333
2.5x + x2 = 5.583333333

The x term is 2.5x.  Take half its coefficient (1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
2.5x + 1.5625 + x2 = 5.583333333 + 1.5625

Reorder the terms:
1.5625 + 2.5x + x2 = 5.583333333 + 1.5625

Combine like terms: 5.583333333 + 1.5625 = 7.145833333
1.5625 + 2.5x + x2 = 7.145833333

Factor a perfect square on the left side:
(x + 1.25)(x + 1.25) = 7.145833333

Calculate the square root of the right side: 2.673169155

Break this problem into two subproblems by setting 
(x + 1.25) equal to 2.673169155 and -2.673169155.

Subproblem 1

x + 1.25 = 2.673169155 Simplifying x + 1.25 = 2.673169155 Reorder the terms: 1.25 + x = 2.673169155 Solving 1.25 + x = 2.673169155 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.25' to each side of the equation. 1.25 + -1.25 + x = 2.673169155 + -1.25 Combine like terms: 1.25 + -1.25 = 0.00 0.00 + x = 2.673169155 + -1.25 x = 2.673169155 + -1.25 Combine like terms: 2.673169155 + -1.25 = 1.423169155 x = 1.423169155 Simplifying x = 1.423169155

Subproblem 2

x + 1.25 = -2.673169155 Simplifying x + 1.25 = -2.673169155 Reorder the terms: 1.25 + x = -2.673169155 Solving 1.25 + x = -2.673169155 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.25' to each side of the equation. 1.25 + -1.25 + x = -2.673169155 + -1.25 Combine like terms: 1.25 + -1.25 = 0.00 0.00 + x = -2.673169155 + -1.25 x = -2.673169155 + -1.25 Combine like terms: -2.673169155 + -1.25 = -3.923169155 x = -3.923169155 Simplifying x = -3.923169155

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.423169155, -3.923169155}

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