0=x^2+29x-54

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Solution for 0=x^2+29x-54 equation:


Simplifying
0 = x2 + 29x + -54

Reorder the terms:
0 = -54 + 29x + x2

Solving
0 = -54 + 29x + x2

Solving for variable 'x'.

Combine like terms: 0 + 54 = 54
54 + -29x + -1x2 = -54 + 29x + x2 + 54 + -29x + -1x2

Reorder the terms:
54 + -29x + -1x2 = -54 + 54 + 29x + -29x + x2 + -1x2

Combine like terms: -54 + 54 = 0
54 + -29x + -1x2 = 0 + 29x + -29x + x2 + -1x2
54 + -29x + -1x2 = 29x + -29x + x2 + -1x2

Combine like terms: 29x + -29x = 0
54 + -29x + -1x2 = 0 + x2 + -1x2
54 + -29x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
54 + -29x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-54 + 29x + x2 = 0

Move the constant term to the right:

Add '54' to each side of the equation.
-54 + 29x + 54 + x2 = 0 + 54

Reorder the terms:
-54 + 54 + 29x + x2 = 0 + 54

Combine like terms: -54 + 54 = 0
0 + 29x + x2 = 0 + 54
29x + x2 = 0 + 54

Combine like terms: 0 + 54 = 54
29x + x2 = 54

The x term is 29x.  Take half its coefficient (14.5).
Square it (210.25) and add it to both sides.

Add '210.25' to each side of the equation.
29x + 210.25 + x2 = 54 + 210.25

Reorder the terms:
210.25 + 29x + x2 = 54 + 210.25

Combine like terms: 54 + 210.25 = 264.25
210.25 + 29x + x2 = 264.25

Factor a perfect square on the left side:
(x + 14.5)(x + 14.5) = 264.25

Calculate the square root of the right side: 16.255768207

Break this problem into two subproblems by setting 
(x + 14.5) equal to 16.255768207 and -16.255768207.

Subproblem 1

x + 14.5 = 16.255768207 Simplifying x + 14.5 = 16.255768207 Reorder the terms: 14.5 + x = 16.255768207 Solving 14.5 + x = 16.255768207 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-14.5' to each side of the equation. 14.5 + -14.5 + x = 16.255768207 + -14.5 Combine like terms: 14.5 + -14.5 = 0.0 0.0 + x = 16.255768207 + -14.5 x = 16.255768207 + -14.5 Combine like terms: 16.255768207 + -14.5 = 1.755768207 x = 1.755768207 Simplifying x = 1.755768207

Subproblem 2

x + 14.5 = -16.255768207 Simplifying x + 14.5 = -16.255768207 Reorder the terms: 14.5 + x = -16.255768207 Solving 14.5 + x = -16.255768207 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-14.5' to each side of the equation. 14.5 + -14.5 + x = -16.255768207 + -14.5 Combine like terms: 14.5 + -14.5 = 0.0 0.0 + x = -16.255768207 + -14.5 x = -16.255768207 + -14.5 Combine like terms: -16.255768207 + -14.5 = -30.755768207 x = -30.755768207 Simplifying x = -30.755768207

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.755768207, -30.755768207}

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