x^2-19x+64=0

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Solution for x^2-19x+64=0 equation:


Simplifying
x2 + -19x + 64 = 0

Reorder the terms:
64 + -19x + x2 = 0

Solving
64 + -19x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-64' to each side of the equation.
64 + -19x + -64 + x2 = 0 + -64

Reorder the terms:
64 + -64 + -19x + x2 = 0 + -64

Combine like terms: 64 + -64 = 0
0 + -19x + x2 = 0 + -64
-19x + x2 = 0 + -64

Combine like terms: 0 + -64 = -64
-19x + x2 = -64

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 = -64 + 90.25

Reorder the terms:
90.25 + -19x + x2 = -64 + 90.25

Combine like terms: -64 + 90.25 = 26.25
90.25 + -19x + x2 = 26.25

Factor a perfect square on the left side:
(x + -9.5)(x + -9.5) = 26.25

Calculate the square root of the right side: 5.123475383

Break this problem into two subproblems by setting 
(x + -9.5) equal to 5.123475383 and -5.123475383.

Subproblem 1

x + -9.5 = 5.123475383 Simplifying x + -9.5 = 5.123475383 Reorder the terms: -9.5 + x = 5.123475383 Solving -9.5 + x = 5.123475383 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 = 5.123475383 + 9.5 Combine like terms: -9.5 + 9.5 = 0.0 0.0 + x = 5.123475383 + 9.5 x = 5.123475383 + 9.5 Combine like terms: 5.123475383 + 9.5 = 14.623475383 x = 14.623475383 Simplifying x = 14.623475383

Subproblem 2

x + -9.5 = -5.123475383 Simplifying x + -9.5 = -5.123475383 Reorder the terms: -9.5 + x = -5.123475383 Solving -9.5 + x = -5.123475383 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 = -5.123475383 + 9.5 Combine like terms: -9.5 + 9.5 = 0.0 0.0 + x = -5.123475383 + 9.5 x = -5.123475383 + 9.5 Combine like terms: -5.123475383 + 9.5 = 4.376524617 x = 4.376524617 Simplifying x = 4.376524617

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.623475383, 4.376524617}

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