5x^2-162x-1008=0

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Solution for 5x^2-162x-1008=0 equation:


Simplifying
5x2 + -162x + -1008 = 0

Reorder the terms:
-1008 + -162x + 5x2 = 0

Solving
-1008 + -162x + 5x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
5 the coefficient of the squared term: 

Divide each side by '5'.
-201.6 + -32.4x + x2 = 0

Move the constant term to the right:

Add '201.6' to each side of the equation.
-201.6 + -32.4x + 201.6 + x2 = 0 + 201.6

Reorder the terms:
-201.6 + 201.6 + -32.4x + x2 = 0 + 201.6

Combine like terms: -201.6 + 201.6 = 0.0
0.0 + -32.4x + x2 = 0 + 201.6
-32.4x + x2 = 0 + 201.6

Combine like terms: 0 + 201.6 = 201.6
-32.4x + x2 = 201.6

The x term is -32.4x.  Take half its coefficient (-16.2).
Square it (262.44) and add it to both sides.

Add '262.44' to each side of the equation.
-32.4x + 262.44 + x2 = 201.6 + 262.44

Reorder the terms:
262.44 + -32.4x + x2 = 201.6 + 262.44

Combine like terms: 201.6 + 262.44 = 464.04
262.44 + -32.4x + x2 = 464.04

Factor a perfect square on the left side:
(x + -16.2)(x + -16.2) = 464.04

Calculate the square root of the right side: 21.541587685

Break this problem into two subproblems by setting 
(x + -16.2) equal to 21.541587685 and -21.541587685.

Subproblem 1

x + -16.2 = 21.541587685 Simplifying x + -16.2 = 21.541587685 Reorder the terms: -16.2 + x = 21.541587685 Solving -16.2 + x = 21.541587685 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '16.2' to each side of the equation. -16.2 + 16.2 + x = 21.541587685 + 16.2 Combine like terms: -16.2 + 16.2 = 0.0 0.0 + x = 21.541587685 + 16.2 x = 21.541587685 + 16.2 Combine like terms: 21.541587685 + 16.2 = 37.741587685 x = 37.741587685 Simplifying x = 37.741587685

Subproblem 2

x + -16.2 = -21.541587685 Simplifying x + -16.2 = -21.541587685 Reorder the terms: -16.2 + x = -21.541587685 Solving -16.2 + x = -21.541587685 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '16.2' to each side of the equation. -16.2 + 16.2 + x = -21.541587685 + 16.2 Combine like terms: -16.2 + 16.2 = 0.0 0.0 + x = -21.541587685 + 16.2 x = -21.541587685 + 16.2 Combine like terms: -21.541587685 + 16.2 = -5.341587685 x = -5.341587685 Simplifying x = -5.341587685

Solution

The solution to the problem is based on the solutions from the subproblems. x = {37.741587685, -5.341587685}

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