3(6x-2)+8x-11=(x^2-3)+4

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Solution for 3(6x-2)+8x-11=(x^2-3)+4 equation:


Simplifying
3(6x + -2) + 8x + -11 = (x2 + -3) + 4

Reorder the terms:
3(-2 + 6x) + 8x + -11 = (x2 + -3) + 4
(-2 * 3 + 6x * 3) + 8x + -11 = (x2 + -3) + 4
(-6 + 18x) + 8x + -11 = (x2 + -3) + 4

Reorder the terms:
-6 + -11 + 18x + 8x = (x2 + -3) + 4

Combine like terms: -6 + -11 = -17
-17 + 18x + 8x = (x2 + -3) + 4

Combine like terms: 18x + 8x = 26x
-17 + 26x = (x2 + -3) + 4

Reorder the terms:
-17 + 26x = (-3 + x2) + 4

Remove parenthesis around (-3 + x2)
-17 + 26x = -3 + x2 + 4

Reorder the terms:
-17 + 26x = -3 + 4 + x2

Combine like terms: -3 + 4 = 1
-17 + 26x = 1 + x2

Solving
-17 + 26x = 1 + x2

Solving for variable 'x'.

Reorder the terms:
-17 + -1 + 26x + -1x2 = 1 + x2 + -1 + -1x2

Combine like terms: -17 + -1 = -18
-18 + 26x + -1x2 = 1 + x2 + -1 + -1x2

Reorder the terms:
-18 + 26x + -1x2 = 1 + -1 + x2 + -1x2

Combine like terms: 1 + -1 = 0
-18 + 26x + -1x2 = 0 + x2 + -1x2
-18 + 26x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-18 + 26x + -1x2 = 0

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

Divide each side by '-1'.
18 + -26x + x2 = 0

Move the constant term to the right:

Add '-18' to each side of the equation.
18 + -26x + -18 + x2 = 0 + -18

Reorder the terms:
18 + -18 + -26x + x2 = 0 + -18

Combine like terms: 18 + -18 = 0
0 + -26x + x2 = 0 + -18
-26x + x2 = 0 + -18

Combine like terms: 0 + -18 = -18
-26x + x2 = -18

The x term is -26x.  Take half its coefficient (-13).
Square it (169) and add it to both sides.

Add '169' to each side of the equation.
-26x + 169 + x2 = -18 + 169

Reorder the terms:
169 + -26x + x2 = -18 + 169

Combine like terms: -18 + 169 = 151
169 + -26x + x2 = 151

Factor a perfect square on the left side:
(x + -13)(x + -13) = 151

Calculate the square root of the right side: 12.288205727

Break this problem into two subproblems by setting 
(x + -13) equal to 12.288205727 and -12.288205727.

Subproblem 1

x + -13 = 12.288205727 Simplifying x + -13 = 12.288205727 Reorder the terms: -13 + x = 12.288205727 Solving -13 + x = 12.288205727 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '13' to each side of the equation. -13 + 13 + x = 12.288205727 + 13 Combine like terms: -13 + 13 = 0 0 + x = 12.288205727 + 13 x = 12.288205727 + 13 Combine like terms: 12.288205727 + 13 = 25.288205727 x = 25.288205727 Simplifying x = 25.288205727

Subproblem 2

x + -13 = -12.288205727 Simplifying x + -13 = -12.288205727 Reorder the terms: -13 + x = -12.288205727 Solving -13 + x = -12.288205727 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '13' to each side of the equation. -13 + 13 + x = -12.288205727 + 13 Combine like terms: -13 + 13 = 0 0 + x = -12.288205727 + 13 x = -12.288205727 + 13 Combine like terms: -12.288205727 + 13 = 0.711794273 x = 0.711794273 Simplifying x = 0.711794273

Solution

The solution to the problem is based on the solutions from the subproblems. x = {25.288205727, 0.711794273}

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