x^2-3x=350

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Solution for x^2-3x=350 equation:


Simplifying
x2 + -3x = 350

Reorder the terms:
-3x + x2 = 350

Solving
-3x + x2 = 350

Solving for variable 'x'.

Reorder the terms:
-350 + -3x + x2 = 350 + -350

Combine like terms: 350 + -350 = 0
-350 + -3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '350' to each side of the equation.
-350 + -3x + 350 + x2 = 0 + 350

Reorder the terms:
-350 + 350 + -3x + x2 = 0 + 350

Combine like terms: -350 + 350 = 0
0 + -3x + x2 = 0 + 350
-3x + x2 = 0 + 350

Combine like terms: 0 + 350 = 350
-3x + x2 = 350

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 = 350 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 350 + 2.25

Combine like terms: 350 + 2.25 = 352.25
2.25 + -3x + x2 = 352.25

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 352.25

Calculate the square root of the right side: 18.768324379

Break this problem into two subproblems by setting 
(x + -1.5) equal to 18.768324379 and -18.768324379.

Subproblem 1

x + -1.5 = 18.768324379 Simplifying x + -1.5 = 18.768324379 Reorder the terms: -1.5 + x = 18.768324379 Solving -1.5 + x = 18.768324379 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 = 18.768324379 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 18.768324379 + 1.5 x = 18.768324379 + 1.5 Combine like terms: 18.768324379 + 1.5 = 20.268324379 x = 20.268324379 Simplifying x = 20.268324379

Subproblem 2

x + -1.5 = -18.768324379 Simplifying x + -1.5 = -18.768324379 Reorder the terms: -1.5 + x = -18.768324379 Solving -1.5 + x = -18.768324379 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 = -18.768324379 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -18.768324379 + 1.5 x = -18.768324379 + 1.5 Combine like terms: -18.768324379 + 1.5 = -17.268324379 x = -17.268324379 Simplifying x = -17.268324379

Solution

The solution to the problem is based on the solutions from the subproblems. x = {20.268324379, -17.268324379}

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