x^2-18x=29

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Solution for x^2-18x=29 equation:


Simplifying
x2 + -18x = 29

Reorder the terms:
-18x + x2 = 29

Solving
-18x + x2 = 29

Solving for variable 'x'.

Reorder the terms:
-29 + -18x + x2 = 29 + -29

Combine like terms: 29 + -29 = 0
-29 + -18x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '29' to each side of the equation.
-29 + -18x + 29 + x2 = 0 + 29

Reorder the terms:
-29 + 29 + -18x + x2 = 0 + 29

Combine like terms: -29 + 29 = 0
0 + -18x + x2 = 0 + 29
-18x + x2 = 0 + 29

Combine like terms: 0 + 29 = 29
-18x + x2 = 29

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 = 29 + 81

Reorder the terms:
81 + -18x + x2 = 29 + 81

Combine like terms: 29 + 81 = 110
81 + -18x + x2 = 110

Factor a perfect square on the left side:
(x + -9)(x + -9) = 110

Calculate the square root of the right side: 10.488088482

Break this problem into two subproblems by setting 
(x + -9) equal to 10.488088482 and -10.488088482.

Subproblem 1

x + -9 = 10.488088482 Simplifying x + -9 = 10.488088482 Reorder the terms: -9 + x = 10.488088482 Solving -9 + x = 10.488088482 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 = 10.488088482 + 9 Combine like terms: -9 + 9 = 0 0 + x = 10.488088482 + 9 x = 10.488088482 + 9 Combine like terms: 10.488088482 + 9 = 19.488088482 x = 19.488088482 Simplifying x = 19.488088482

Subproblem 2

x + -9 = -10.488088482 Simplifying x + -9 = -10.488088482 Reorder the terms: -9 + x = -10.488088482 Solving -9 + x = -10.488088482 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 = -10.488088482 + 9 Combine like terms: -9 + 9 = 0 0 + x = -10.488088482 + 9 x = -10.488088482 + 9 Combine like terms: -10.488088482 + 9 = -1.488088482 x = -1.488088482 Simplifying x = -1.488088482

Solution

The solution to the problem is based on the solutions from the subproblems. x = {19.488088482, -1.488088482}

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