x^2+65x-186=0

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Solution for x^2+65x-186=0 equation:


Simplifying
x2 + 65x + -186 = 0

Reorder the terms:
-186 + 65x + x2 = 0

Solving
-186 + 65x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '186' to each side of the equation.
-186 + 65x + 186 + x2 = 0 + 186

Reorder the terms:
-186 + 186 + 65x + x2 = 0 + 186

Combine like terms: -186 + 186 = 0
0 + 65x + x2 = 0 + 186
65x + x2 = 0 + 186

Combine like terms: 0 + 186 = 186
65x + x2 = 186

The x term is 65x.  Take half its coefficient (32.5).
Square it (1056.25) and add it to both sides.

Add '1056.25' to each side of the equation.
65x + 1056.25 + x2 = 186 + 1056.25

Reorder the terms:
1056.25 + 65x + x2 = 186 + 1056.25

Combine like terms: 186 + 1056.25 = 1242.25
1056.25 + 65x + x2 = 1242.25

Factor a perfect square on the left side:
(x + 32.5)(x + 32.5) = 1242.25

Calculate the square root of the right side: 35.245567097

Break this problem into two subproblems by setting 
(x + 32.5) equal to 35.245567097 and -35.245567097.

Subproblem 1

x + 32.5 = 35.245567097 Simplifying x + 32.5 = 35.245567097 Reorder the terms: 32.5 + x = 35.245567097 Solving 32.5 + x = 35.245567097 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-32.5' to each side of the equation. 32.5 + -32.5 + x = 35.245567097 + -32.5 Combine like terms: 32.5 + -32.5 = 0.0 0.0 + x = 35.245567097 + -32.5 x = 35.245567097 + -32.5 Combine like terms: 35.245567097 + -32.5 = 2.745567097 x = 2.745567097 Simplifying x = 2.745567097

Subproblem 2

x + 32.5 = -35.245567097 Simplifying x + 32.5 = -35.245567097 Reorder the terms: 32.5 + x = -35.245567097 Solving 32.5 + x = -35.245567097 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-32.5' to each side of the equation. 32.5 + -32.5 + x = -35.245567097 + -32.5 Combine like terms: 32.5 + -32.5 = 0.0 0.0 + x = -35.245567097 + -32.5 x = -35.245567097 + -32.5 Combine like terms: -35.245567097 + -32.5 = -67.745567097 x = -67.745567097 Simplifying x = -67.745567097

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.745567097, -67.745567097}

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