10x^2-27x-5=0

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Solution for 10x^2-27x-5=0 equation:


Simplifying
10x2 + -27x + -5 = 0

Reorder the terms:
-5 + -27x + 10x2 = 0

Solving
-5 + -27x + 10x2 = 0

Solving for variable 'x'.

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

Divide each side by '10'.
-0.5 + -2.7x + x2 = 0

Move the constant term to the right:

Add '0.5' to each side of the equation.
-0.5 + -2.7x + 0.5 + x2 = 0 + 0.5

Reorder the terms:
-0.5 + 0.5 + -2.7x + x2 = 0 + 0.5

Combine like terms: -0.5 + 0.5 = 0.0
0.0 + -2.7x + x2 = 0 + 0.5
-2.7x + x2 = 0 + 0.5

Combine like terms: 0 + 0.5 = 0.5
-2.7x + x2 = 0.5

The x term is -2.7x.  Take half its coefficient (-1.35).
Square it (1.8225) and add it to both sides.

Add '1.8225' to each side of the equation.
-2.7x + 1.8225 + x2 = 0.5 + 1.8225

Reorder the terms:
1.8225 + -2.7x + x2 = 0.5 + 1.8225

Combine like terms: 0.5 + 1.8225 = 2.3225
1.8225 + -2.7x + x2 = 2.3225

Factor a perfect square on the left side:
(x + -1.35)(x + -1.35) = 2.3225

Calculate the square root of the right side: 1.523975065

Break this problem into two subproblems by setting 
(x + -1.35) equal to 1.523975065 and -1.523975065.

Subproblem 1

x + -1.35 = 1.523975065 Simplifying x + -1.35 = 1.523975065 Reorder the terms: -1.35 + x = 1.523975065 Solving -1.35 + x = 1.523975065 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.35' to each side of the equation. -1.35 + 1.35 + x = 1.523975065 + 1.35 Combine like terms: -1.35 + 1.35 = 0.00 0.00 + x = 1.523975065 + 1.35 x = 1.523975065 + 1.35 Combine like terms: 1.523975065 + 1.35 = 2.873975065 x = 2.873975065 Simplifying x = 2.873975065

Subproblem 2

x + -1.35 = -1.523975065 Simplifying x + -1.35 = -1.523975065 Reorder the terms: -1.35 + x = -1.523975065 Solving -1.35 + x = -1.523975065 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.35' to each side of the equation. -1.35 + 1.35 + x = -1.523975065 + 1.35 Combine like terms: -1.35 + 1.35 = 0.00 0.00 + x = -1.523975065 + 1.35 x = -1.523975065 + 1.35 Combine like terms: -1.523975065 + 1.35 = -0.173975065 x = -0.173975065 Simplifying x = -0.173975065

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.873975065, -0.173975065}

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