x^2-3x-348=0

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Solution for x^2-3x-348=0 equation:


Simplifying
x2 + -3x + -348 = 0

Reorder the terms:
-348 + -3x + x2 = 0

Solving
-348 + -3x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '348' to each side of the equation.
-348 + -3x + 348 + x2 = 0 + 348

Reorder the terms:
-348 + 348 + -3x + x2 = 0 + 348

Combine like terms: -348 + 348 = 0
0 + -3x + x2 = 0 + 348
-3x + x2 = 0 + 348

Combine like terms: 0 + 348 = 348
-3x + x2 = 348

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 348 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 348 + 2.25

Combine like terms: 348 + 2.25 = 350.25
2.25 + -3x + x2 = 350.25

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 350.25

Calculate the square root of the right side: 18.714967272

Break this problem into two subproblems by setting 
(x + -1.5) equal to 18.714967272 and -18.714967272.

Subproblem 1

x + -1.5 = 18.714967272 Simplifying x + -1.5 = 18.714967272 Reorder the terms: -1.5 + x = 18.714967272 Solving -1.5 + x = 18.714967272 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 18.714967272 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 18.714967272 + 1.5 x = 18.714967272 + 1.5 Combine like terms: 18.714967272 + 1.5 = 20.214967272 x = 20.214967272 Simplifying x = 20.214967272

Subproblem 2

x + -1.5 = -18.714967272 Simplifying x + -1.5 = -18.714967272 Reorder the terms: -1.5 + x = -18.714967272 Solving -1.5 + x = -18.714967272 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -18.714967272 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -18.714967272 + 1.5 x = -18.714967272 + 1.5 Combine like terms: -18.714967272 + 1.5 = -17.214967272 x = -17.214967272 Simplifying x = -17.214967272

Solution

The solution to the problem is based on the solutions from the subproblems. x = {20.214967272, -17.214967272}

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