x^2-19x-48=0

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Solution for x^2-19x-48=0 equation:


Simplifying
x2 + -19x + -48 = 0

Reorder the terms:
-48 + -19x + x2 = 0

Solving
-48 + -19x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '48' to each side of the equation.
-48 + -19x + 48 + x2 = 0 + 48

Reorder the terms:
-48 + 48 + -19x + x2 = 0 + 48

Combine like terms: -48 + 48 = 0
0 + -19x + x2 = 0 + 48
-19x + x2 = 0 + 48

Combine like terms: 0 + 48 = 48
-19x + x2 = 48

The x term is -19x.  Take half its coefficient (-9.5).
Square it (90.25) and add it to both sides.

Add '90.25' to each side of the equation.
-19x + 90.25 + x2 = 48 + 90.25

Reorder the terms:
90.25 + -19x + x2 = 48 + 90.25

Combine like terms: 48 + 90.25 = 138.25
90.25 + -19x + x2 = 138.25

Factor a perfect square on the left side:
(x + -9.5)(x + -9.5) = 138.25

Calculate the square root of the right side: 11.757976016

Break this problem into two subproblems by setting 
(x + -9.5) equal to 11.757976016 and -11.757976016.

Subproblem 1

x + -9.5 = 11.757976016 Simplifying x + -9.5 = 11.757976016 Reorder the terms: -9.5 + x = 11.757976016 Solving -9.5 + x = 11.757976016 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.5' to each side of the equation. -9.5 + 9.5 + x = 11.757976016 + 9.5 Combine like terms: -9.5 + 9.5 = 0.0 0.0 + x = 11.757976016 + 9.5 x = 11.757976016 + 9.5 Combine like terms: 11.757976016 + 9.5 = 21.257976016 x = 21.257976016 Simplifying x = 21.257976016

Subproblem 2

x + -9.5 = -11.757976016 Simplifying x + -9.5 = -11.757976016 Reorder the terms: -9.5 + x = -11.757976016 Solving -9.5 + x = -11.757976016 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.5' to each side of the equation. -9.5 + 9.5 + x = -11.757976016 + 9.5 Combine like terms: -9.5 + 9.5 = 0.0 0.0 + x = -11.757976016 + 9.5 x = -11.757976016 + 9.5 Combine like terms: -11.757976016 + 9.5 = -2.257976016 x = -2.257976016 Simplifying x = -2.257976016

Solution

The solution to the problem is based on the solutions from the subproblems. x = {21.257976016, -2.257976016}

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