X^2+11X-450=0

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Solution for X^2+11X-450=0 equation:


Simplifying
X2 + 11X + -450 = 0

Reorder the terms:
-450 + 11X + X2 = 0

Solving
-450 + 11X + X2 = 0

Solving for variable 'X'.

Begin completing the square.

Move the constant term to the right:

Add '450' to each side of the equation.
-450 + 11X + 450 + X2 = 0 + 450

Reorder the terms:
-450 + 450 + 11X + X2 = 0 + 450

Combine like terms: -450 + 450 = 0
0 + 11X + X2 = 0 + 450
11X + X2 = 0 + 450

Combine like terms: 0 + 450 = 450
11X + X2 = 450

The X term is 11X.  Take half its coefficient (5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
11X + 30.25 + X2 = 450 + 30.25

Reorder the terms:
30.25 + 11X + X2 = 450 + 30.25

Combine like terms: 450 + 30.25 = 480.25
30.25 + 11X + X2 = 480.25

Factor a perfect square on the left side:
(X + 5.5)(X + 5.5) = 480.25

Calculate the square root of the right side: 21.914607001

Break this problem into two subproblems by setting 
(X + 5.5) equal to 21.914607001 and -21.914607001.

Subproblem 1

X + 5.5 = 21.914607001 Simplifying X + 5.5 = 21.914607001 Reorder the terms: 5.5 + X = 21.914607001 Solving 5.5 + X = 21.914607001 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + X = 21.914607001 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + X = 21.914607001 + -5.5 X = 21.914607001 + -5.5 Combine like terms: 21.914607001 + -5.5 = 16.414607001 X = 16.414607001 Simplifying X = 16.414607001

Subproblem 2

X + 5.5 = -21.914607001 Simplifying X + 5.5 = -21.914607001 Reorder the terms: 5.5 + X = -21.914607001 Solving 5.5 + X = -21.914607001 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + X = -21.914607001 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + X = -21.914607001 + -5.5 X = -21.914607001 + -5.5 Combine like terms: -21.914607001 + -5.5 = -27.414607001 X = -27.414607001 Simplifying X = -27.414607001

Solution

The solution to the problem is based on the solutions from the subproblems. X = {16.414607001, -27.414607001}

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