X^2-12X-4.5=0

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Solution for X^2-12X-4.5=0 equation:


Simplifying
X2 + -12X + -4.5 = 0

Reorder the terms:
-4.5 + -12X + X2 = 0

Solving
-4.5 + -12X + X2 = 0

Solving for variable 'X'.

Begin completing the square.

Move the constant term to the right:

Add '4.5' to each side of the equation.
-4.5 + -12X + 4.5 + X2 = 0 + 4.5

Reorder the terms:
-4.5 + 4.5 + -12X + X2 = 0 + 4.5

Combine like terms: -4.5 + 4.5 = 0.0
0.0 + -12X + X2 = 0 + 4.5
-12X + X2 = 0 + 4.5

Combine like terms: 0 + 4.5 = 4.5
-12X + X2 = 4.5

The X term is -12X.  Take half its coefficient (-6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
-12X + 36 + X2 = 4.5 + 36

Reorder the terms:
36 + -12X + X2 = 4.5 + 36

Combine like terms: 4.5 + 36 = 40.5
36 + -12X + X2 = 40.5

Factor a perfect square on the left side:
(X + -6)(X + -6) = 40.5

Calculate the square root of the right side: 6.363961031

Break this problem into two subproblems by setting 
(X + -6) equal to 6.363961031 and -6.363961031.

Subproblem 1

X + -6 = 6.363961031 Simplifying X + -6 = 6.363961031 Reorder the terms: -6 + X = 6.363961031 Solving -6 + X = 6.363961031 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + X = 6.363961031 + 6 Combine like terms: -6 + 6 = 0 0 + X = 6.363961031 + 6 X = 6.363961031 + 6 Combine like terms: 6.363961031 + 6 = 12.363961031 X = 12.363961031 Simplifying X = 12.363961031

Subproblem 2

X + -6 = -6.363961031 Simplifying X + -6 = -6.363961031 Reorder the terms: -6 + X = -6.363961031 Solving -6 + X = -6.363961031 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + X = -6.363961031 + 6 Combine like terms: -6 + 6 = 0 0 + X = -6.363961031 + 6 X = -6.363961031 + 6 Combine like terms: -6.363961031 + 6 = -0.363961031 X = -0.363961031 Simplifying X = -0.363961031

Solution

The solution to the problem is based on the solutions from the subproblems. X = {12.363961031, -0.363961031}

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