x^2+30x+43=0

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Solution for x^2+30x+43=0 equation:


Simplifying
x2 + 30x + 43 = 0

Reorder the terms:
43 + 30x + x2 = 0

Solving
43 + 30x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-43' to each side of the equation.
43 + 30x + -43 + x2 = 0 + -43

Reorder the terms:
43 + -43 + 30x + x2 = 0 + -43

Combine like terms: 43 + -43 = 0
0 + 30x + x2 = 0 + -43
30x + x2 = 0 + -43

Combine like terms: 0 + -43 = -43
30x + x2 = -43

The x term is 30x.  Take half its coefficient (15).
Square it (225) and add it to both sides.

Add '225' to each side of the equation.
30x + 225 + x2 = -43 + 225

Reorder the terms:
225 + 30x + x2 = -43 + 225

Combine like terms: -43 + 225 = 182
225 + 30x + x2 = 182

Factor a perfect square on the left side:
(x + 15)(x + 15) = 182

Calculate the square root of the right side: 13.490737563

Break this problem into two subproblems by setting 
(x + 15) equal to 13.490737563 and -13.490737563.

Subproblem 1

x + 15 = 13.490737563 Simplifying x + 15 = 13.490737563 Reorder the terms: 15 + x = 13.490737563 Solving 15 + x = 13.490737563 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + x = 13.490737563 + -15 Combine like terms: 15 + -15 = 0 0 + x = 13.490737563 + -15 x = 13.490737563 + -15 Combine like terms: 13.490737563 + -15 = -1.509262437 x = -1.509262437 Simplifying x = -1.509262437

Subproblem 2

x + 15 = -13.490737563 Simplifying x + 15 = -13.490737563 Reorder the terms: 15 + x = -13.490737563 Solving 15 + x = -13.490737563 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + x = -13.490737563 + -15 Combine like terms: 15 + -15 = 0 0 + x = -13.490737563 + -15 x = -13.490737563 + -15 Combine like terms: -13.490737563 + -15 = -28.490737563 x = -28.490737563 Simplifying x = -28.490737563

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.509262437, -28.490737563}

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