x^2+3x=334

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Solution for x^2+3x=334 equation:


Simplifying
x2 + 3x = 334

Reorder the terms:
3x + x2 = 334

Solving
3x + x2 = 334

Solving for variable 'x'.

Reorder the terms:
-334 + 3x + x2 = 334 + -334

Combine like terms: 334 + -334 = 0
-334 + 3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '334' to each side of the equation.
-334 + 3x + 334 + x2 = 0 + 334

Reorder the terms:
-334 + 334 + 3x + x2 = 0 + 334

Combine like terms: -334 + 334 = 0
0 + 3x + x2 = 0 + 334
3x + x2 = 0 + 334

Combine like terms: 0 + 334 = 334
3x + x2 = 334

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 = 334 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 334 + 2.25

Combine like terms: 334 + 2.25 = 336.25
2.25 + 3x + x2 = 336.25

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 336.25

Calculate the square root of the right side: 18.337120821

Break this problem into two subproblems by setting 
(x + 1.5) equal to 18.337120821 and -18.337120821.

Subproblem 1

x + 1.5 = 18.337120821 Simplifying x + 1.5 = 18.337120821 Reorder the terms: 1.5 + x = 18.337120821 Solving 1.5 + x = 18.337120821 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 = 18.337120821 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 18.337120821 + -1.5 x = 18.337120821 + -1.5 Combine like terms: 18.337120821 + -1.5 = 16.837120821 x = 16.837120821 Simplifying x = 16.837120821

Subproblem 2

x + 1.5 = -18.337120821 Simplifying x + 1.5 = -18.337120821 Reorder the terms: 1.5 + x = -18.337120821 Solving 1.5 + x = -18.337120821 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 = -18.337120821 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -18.337120821 + -1.5 x = -18.337120821 + -1.5 Combine like terms: -18.337120821 + -1.5 = -19.837120821 x = -19.837120821 Simplifying x = -19.837120821

Solution

The solution to the problem is based on the solutions from the subproblems. x = {16.837120821, -19.837120821}

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