3x^2-24x-48=7

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Solution for 3x^2-24x-48=7 equation:


Simplifying
3x2 + -24x + -48 = 7

Reorder the terms:
-48 + -24x + 3x2 = 7

Solving
-48 + -24x + 3x2 = 7

Solving for variable 'x'.

Reorder the terms:
-48 + -7 + -24x + 3x2 = 7 + -7

Combine like terms: -48 + -7 = -55
-55 + -24x + 3x2 = 7 + -7

Combine like terms: 7 + -7 = 0
-55 + -24x + 3x2 = 0

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

Divide each side by '3'.
-18.33333333 + -8x + x2 = 0

Move the constant term to the right:

Add '18.33333333' to each side of the equation.
-18.33333333 + -8x + 18.33333333 + x2 = 0 + 18.33333333

Reorder the terms:
-18.33333333 + 18.33333333 + -8x + x2 = 0 + 18.33333333

Combine like terms: -18.33333333 + 18.33333333 = 0.00000000
0.00000000 + -8x + x2 = 0 + 18.33333333
-8x + x2 = 0 + 18.33333333

Combine like terms: 0 + 18.33333333 = 18.33333333
-8x + x2 = 18.33333333

The x term is -8x.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8x + 16 + x2 = 18.33333333 + 16

Reorder the terms:
16 + -8x + x2 = 18.33333333 + 16

Combine like terms: 18.33333333 + 16 = 34.33333333
16 + -8x + x2 = 34.33333333

Factor a perfect square on the left side:
(x + -4)(x + -4) = 34.33333333

Calculate the square root of the right side: 5.859465277

Break this problem into two subproblems by setting 
(x + -4) equal to 5.859465277 and -5.859465277.

Subproblem 1

x + -4 = 5.859465277 Simplifying x + -4 = 5.859465277 Reorder the terms: -4 + x = 5.859465277 Solving -4 + x = 5.859465277 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = 5.859465277 + 4 Combine like terms: -4 + 4 = 0 0 + x = 5.859465277 + 4 x = 5.859465277 + 4 Combine like terms: 5.859465277 + 4 = 9.859465277 x = 9.859465277 Simplifying x = 9.859465277

Subproblem 2

x + -4 = -5.859465277 Simplifying x + -4 = -5.859465277 Reorder the terms: -4 + x = -5.859465277 Solving -4 + x = -5.859465277 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = -5.859465277 + 4 Combine like terms: -4 + 4 = 0 0 + x = -5.859465277 + 4 x = -5.859465277 + 4 Combine like terms: -5.859465277 + 4 = -1.859465277 x = -1.859465277 Simplifying x = -1.859465277

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.859465277, -1.859465277}

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