x^2-4x-143=0

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Solution for x^2-4x-143=0 equation:


Simplifying
x2 + -4x + -143 = 0

Reorder the terms:
-143 + -4x + x2 = 0

Solving
-143 + -4x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '143' to each side of the equation.
-143 + -4x + 143 + x2 = 0 + 143

Reorder the terms:
-143 + 143 + -4x + x2 = 0 + 143

Combine like terms: -143 + 143 = 0
0 + -4x + x2 = 0 + 143
-4x + x2 = 0 + 143

Combine like terms: 0 + 143 = 143
-4x + x2 = 143

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = 143 + 4

Reorder the terms:
4 + -4x + x2 = 143 + 4

Combine like terms: 143 + 4 = 147
4 + -4x + x2 = 147

Factor a perfect square on the left side:
(x + -2)(x + -2) = 147

Calculate the square root of the right side: 12.124355653

Break this problem into two subproblems by setting 
(x + -2) equal to 12.124355653 and -12.124355653.

Subproblem 1

x + -2 = 12.124355653 Simplifying x + -2 = 12.124355653 Reorder the terms: -2 + x = 12.124355653 Solving -2 + x = 12.124355653 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 12.124355653 + 2 Combine like terms: -2 + 2 = 0 0 + x = 12.124355653 + 2 x = 12.124355653 + 2 Combine like terms: 12.124355653 + 2 = 14.124355653 x = 14.124355653 Simplifying x = 14.124355653

Subproblem 2

x + -2 = -12.124355653 Simplifying x + -2 = -12.124355653 Reorder the terms: -2 + x = -12.124355653 Solving -2 + x = -12.124355653 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -12.124355653 + 2 Combine like terms: -2 + 2 = 0 0 + x = -12.124355653 + 2 x = -12.124355653 + 2 Combine like terms: -12.124355653 + 2 = -10.124355653 x = -10.124355653 Simplifying x = -10.124355653

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.124355653, -10.124355653}

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