X^2+X+1=36

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Solution for X^2+X+1=36 equation:


Simplifying
X2 + X + 1 = 36

Reorder the terms:
1 + X + X2 = 36

Solving
1 + X + X2 = 36

Solving for variable 'X'.

Reorder the terms:
1 + -36 + X + X2 = 36 + -36

Combine like terms: 1 + -36 = -35
-35 + X + X2 = 36 + -36

Combine like terms: 36 + -36 = 0
-35 + X + X2 = 0

Begin completing the square.

Move the constant term to the right:

Add '35' to each side of the equation.
-35 + X + 35 + X2 = 0 + 35

Reorder the terms:
-35 + 35 + X + X2 = 0 + 35

Combine like terms: -35 + 35 = 0
0 + X + X2 = 0 + 35
X + X2 = 0 + 35

Combine like terms: 0 + 35 = 35
X + X2 = 35

The X term is X.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
X + 0.25 + X2 = 35 + 0.25

Reorder the terms:
0.25 + X + X2 = 35 + 0.25

Combine like terms: 35 + 0.25 = 35.25
0.25 + X + X2 = 35.25

Factor a perfect square on the left side:
(X + 0.5)(X + 0.5) = 35.25

Calculate the square root of the right side: 5.937171044

Break this problem into two subproblems by setting 
(X + 0.5) equal to 5.937171044 and -5.937171044.

Subproblem 1

X + 0.5 = 5.937171044 Simplifying X + 0.5 = 5.937171044 Reorder the terms: 0.5 + X = 5.937171044 Solving 0.5 + X = 5.937171044 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + X = 5.937171044 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + X = 5.937171044 + -0.5 X = 5.937171044 + -0.5 Combine like terms: 5.937171044 + -0.5 = 5.437171044 X = 5.437171044 Simplifying X = 5.437171044

Subproblem 2

X + 0.5 = -5.937171044 Simplifying X + 0.5 = -5.937171044 Reorder the terms: 0.5 + X = -5.937171044 Solving 0.5 + X = -5.937171044 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + X = -5.937171044 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + X = -5.937171044 + -0.5 X = -5.937171044 + -0.5 Combine like terms: -5.937171044 + -0.5 = -6.437171044 X = -6.437171044 Simplifying X = -6.437171044

Solution

The solution to the problem is based on the solutions from the subproblems. X = {5.437171044, -6.437171044}

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