3x^2+x-14=48

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Solution for 3x^2+x-14=48 equation:


Simplifying
3x2 + x + -14 = 48

Reorder the terms:
-14 + x + 3x2 = 48

Solving
-14 + x + 3x2 = 48

Solving for variable 'x'.

Reorder the terms:
-14 + -48 + x + 3x2 = 48 + -48

Combine like terms: -14 + -48 = -62
-62 + x + 3x2 = 48 + -48

Combine like terms: 48 + -48 = 0
-62 + x + 3x2 = 0

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

Divide each side by '3'.
-20.66666667 + 0.3333333333x + x2 = 0

Move the constant term to the right:

Add '20.66666667' to each side of the equation.
-20.66666667 + 0.3333333333x + 20.66666667 + x2 = 0 + 20.66666667

Reorder the terms:
-20.66666667 + 20.66666667 + 0.3333333333x + x2 = 0 + 20.66666667

Combine like terms: -20.66666667 + 20.66666667 = 0.00000000
0.00000000 + 0.3333333333x + x2 = 0 + 20.66666667
0.3333333333x + x2 = 0 + 20.66666667

Combine like terms: 0 + 20.66666667 = 20.66666667
0.3333333333x + x2 = 20.66666667

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.3333333333x + 0.25 + x2 = 20.66666667 + 0.25

Reorder the terms:
0.25 + 0.3333333333x + x2 = 20.66666667 + 0.25

Combine like terms: 20.66666667 + 0.25 = 20.91666667
0.25 + 0.3333333333x + x2 = 20.91666667

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 20.91666667

Calculate the square root of the right side: 4.573474245

Break this problem into two subproblems by setting 
(x + 0.5) equal to 4.573474245 and -4.573474245.

Subproblem 1

x + 0.5 = 4.573474245 Simplifying x + 0.5 = 4.573474245 Reorder the terms: 0.5 + x = 4.573474245 Solving 0.5 + x = 4.573474245 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 4.573474245 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 4.573474245 + -0.5 x = 4.573474245 + -0.5 Combine like terms: 4.573474245 + -0.5 = 4.073474245 x = 4.073474245 Simplifying x = 4.073474245

Subproblem 2

x + 0.5 = -4.573474245 Simplifying x + 0.5 = -4.573474245 Reorder the terms: 0.5 + x = -4.573474245 Solving 0.5 + x = -4.573474245 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -4.573474245 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -4.573474245 + -0.5 x = -4.573474245 + -0.5 Combine like terms: -4.573474245 + -0.5 = -5.073474245 x = -5.073474245 Simplifying x = -5.073474245

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.073474245, -5.073474245}

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