x^2-18x+48=0

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Solution for x^2-18x+48=0 equation:


Simplifying
x2 + -18x + 48 = 0

Reorder the terms:
48 + -18x + x2 = 0

Solving
48 + -18x + 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 + -18x + -48 + x2 = 0 + -48

Reorder the terms:
48 + -48 + -18x + x2 = 0 + -48

Combine like terms: 48 + -48 = 0
0 + -18x + x2 = 0 + -48
-18x + x2 = 0 + -48

Combine like terms: 0 + -48 = -48
-18x + x2 = -48

The x term is -18x.  Take half its coefficient (-9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
-18x + 81 + x2 = -48 + 81

Reorder the terms:
81 + -18x + x2 = -48 + 81

Combine like terms: -48 + 81 = 33
81 + -18x + x2 = 33

Factor a perfect square on the left side:
(x + -9)(x + -9) = 33

Calculate the square root of the right side: 5.744562647

Break this problem into two subproblems by setting 
(x + -9) equal to 5.744562647 and -5.744562647.

Subproblem 1

x + -9 = 5.744562647 Simplifying x + -9 = 5.744562647 Reorder the terms: -9 + x = 5.744562647 Solving -9 + x = 5.744562647 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = 5.744562647 + 9 Combine like terms: -9 + 9 = 0 0 + x = 5.744562647 + 9 x = 5.744562647 + 9 Combine like terms: 5.744562647 + 9 = 14.744562647 x = 14.744562647 Simplifying x = 14.744562647

Subproblem 2

x + -9 = -5.744562647 Simplifying x + -9 = -5.744562647 Reorder the terms: -9 + x = -5.744562647 Solving -9 + x = -5.744562647 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = -5.744562647 + 9 Combine like terms: -9 + 9 = 0 0 + x = -5.744562647 + 9 x = -5.744562647 + 9 Combine like terms: -5.744562647 + 9 = 3.255437353 x = 3.255437353 Simplifying x = 3.255437353

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.744562647, 3.255437353}

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