x^2-12x-1020=0

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Solution for x^2-12x-1020=0 equation:


Simplifying
x2 + -12x + -1020 = 0

Reorder the terms:
-1020 + -12x + x2 = 0

Solving
-1020 + -12x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '1020' to each side of the equation.
-1020 + -12x + 1020 + x2 = 0 + 1020

Reorder the terms:
-1020 + 1020 + -12x + x2 = 0 + 1020

Combine like terms: -1020 + 1020 = 0
0 + -12x + x2 = 0 + 1020
-12x + x2 = 0 + 1020

Combine like terms: 0 + 1020 = 1020
-12x + x2 = 1020

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 = 1020 + 36

Reorder the terms:
36 + -12x + x2 = 1020 + 36

Combine like terms: 1020 + 36 = 1056
36 + -12x + x2 = 1056

Factor a perfect square on the left side:
(x + -6)(x + -6) = 1056

Calculate the square root of the right side: 32.496153619

Break this problem into two subproblems by setting 
(x + -6) equal to 32.496153619 and -32.496153619.

Subproblem 1

x + -6 = 32.496153619 Simplifying x + -6 = 32.496153619 Reorder the terms: -6 + x = 32.496153619 Solving -6 + x = 32.496153619 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 = 32.496153619 + 6 Combine like terms: -6 + 6 = 0 0 + x = 32.496153619 + 6 x = 32.496153619 + 6 Combine like terms: 32.496153619 + 6 = 38.496153619 x = 38.496153619 Simplifying x = 38.496153619

Subproblem 2

x + -6 = -32.496153619 Simplifying x + -6 = -32.496153619 Reorder the terms: -6 + x = -32.496153619 Solving -6 + x = -32.496153619 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 = -32.496153619 + 6 Combine like terms: -6 + 6 = 0 0 + x = -32.496153619 + 6 x = -32.496153619 + 6 Combine like terms: -32.496153619 + 6 = -26.496153619 x = -26.496153619 Simplifying x = -26.496153619

Solution

The solution to the problem is based on the solutions from the subproblems. x = {38.496153619, -26.496153619}

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