x^2+103x-30=0

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Solution for x^2+103x-30=0 equation:


Simplifying
x2 + 103x + -30 = 0

Reorder the terms:
-30 + 103x + x2 = 0

Solving
-30 + 103x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '30' to each side of the equation.
-30 + 103x + 30 + x2 = 0 + 30

Reorder the terms:
-30 + 30 + 103x + x2 = 0 + 30

Combine like terms: -30 + 30 = 0
0 + 103x + x2 = 0 + 30
103x + x2 = 0 + 30

Combine like terms: 0 + 30 = 30
103x + x2 = 30

The x term is 103x.  Take half its coefficient (51.5).
Square it (2652.25) and add it to both sides.

Add '2652.25' to each side of the equation.
103x + 2652.25 + x2 = 30 + 2652.25

Reorder the terms:
2652.25 + 103x + x2 = 30 + 2652.25

Combine like terms: 30 + 2652.25 = 2682.25
2652.25 + 103x + x2 = 2682.25

Factor a perfect square on the left side:
(x + 51.5)(x + 51.5) = 2682.25

Calculate the square root of the right side: 51.790443134

Break this problem into two subproblems by setting 
(x + 51.5) equal to 51.790443134 and -51.790443134.

Subproblem 1

x + 51.5 = 51.790443134 Simplifying x + 51.5 = 51.790443134 Reorder the terms: 51.5 + x = 51.790443134 Solving 51.5 + x = 51.790443134 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-51.5' to each side of the equation. 51.5 + -51.5 + x = 51.790443134 + -51.5 Combine like terms: 51.5 + -51.5 = 0.0 0.0 + x = 51.790443134 + -51.5 x = 51.790443134 + -51.5 Combine like terms: 51.790443134 + -51.5 = 0.290443134 x = 0.290443134 Simplifying x = 0.290443134

Subproblem 2

x + 51.5 = -51.790443134 Simplifying x + 51.5 = -51.790443134 Reorder the terms: 51.5 + x = -51.790443134 Solving 51.5 + x = -51.790443134 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-51.5' to each side of the equation. 51.5 + -51.5 + x = -51.790443134 + -51.5 Combine like terms: 51.5 + -51.5 = 0.0 0.0 + x = -51.790443134 + -51.5 x = -51.790443134 + -51.5 Combine like terms: -51.790443134 + -51.5 = -103.290443134 x = -103.290443134 Simplifying x = -103.290443134

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.290443134, -103.290443134}

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