x^2-80x-1350=0

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Solution for x^2-80x-1350=0 equation:


Simplifying
x2 + -80x + -1350 = 0

Reorder the terms:
-1350 + -80x + x2 = 0

Solving
-1350 + -80x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '1350' to each side of the equation.
-1350 + -80x + 1350 + x2 = 0 + 1350

Reorder the terms:
-1350 + 1350 + -80x + x2 = 0 + 1350

Combine like terms: -1350 + 1350 = 0
0 + -80x + x2 = 0 + 1350
-80x + x2 = 0 + 1350

Combine like terms: 0 + 1350 = 1350
-80x + x2 = 1350

The x term is -80x.  Take half its coefficient (-40).
Square it (1600) and add it to both sides.

Add '1600' to each side of the equation.
-80x + 1600 + x2 = 1350 + 1600

Reorder the terms:
1600 + -80x + x2 = 1350 + 1600

Combine like terms: 1350 + 1600 = 2950
1600 + -80x + x2 = 2950

Factor a perfect square on the left side:
(x + -40)(x + -40) = 2950

Calculate the square root of the right side: 54.313902456

Break this problem into two subproblems by setting 
(x + -40) equal to 54.313902456 and -54.313902456.

Subproblem 1

x + -40 = 54.313902456 Simplifying x + -40 = 54.313902456 Reorder the terms: -40 + x = 54.313902456 Solving -40 + x = 54.313902456 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '40' to each side of the equation. -40 + 40 + x = 54.313902456 + 40 Combine like terms: -40 + 40 = 0 0 + x = 54.313902456 + 40 x = 54.313902456 + 40 Combine like terms: 54.313902456 + 40 = 94.313902456 x = 94.313902456 Simplifying x = 94.313902456

Subproblem 2

x + -40 = -54.313902456 Simplifying x + -40 = -54.313902456 Reorder the terms: -40 + x = -54.313902456 Solving -40 + x = -54.313902456 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '40' to each side of the equation. -40 + 40 + x = -54.313902456 + 40 Combine like terms: -40 + 40 = 0 0 + x = -54.313902456 + 40 x = -54.313902456 + 40 Combine like terms: -54.313902456 + 40 = -14.313902456 x = -14.313902456 Simplifying x = -14.313902456

Solution

The solution to the problem is based on the solutions from the subproblems. x = {94.313902456, -14.313902456}

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