54+16x-x^2=0

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Solution for 54+16x-x^2=0 equation:


Simplifying
54 + 16x + -1x2 = 0

Solving
54 + 16x + -1x2 = 0

Solving for variable 'x'.

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

Divide each side by '-1'.
-54 + -16x + x2 = 0

Move the constant term to the right:

Add '54' to each side of the equation.
-54 + -16x + 54 + x2 = 0 + 54

Reorder the terms:
-54 + 54 + -16x + x2 = 0 + 54

Combine like terms: -54 + 54 = 0
0 + -16x + x2 = 0 + 54
-16x + x2 = 0 + 54

Combine like terms: 0 + 54 = 54
-16x + x2 = 54

The x term is -16x.  Take half its coefficient (-8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
-16x + 64 + x2 = 54 + 64

Reorder the terms:
64 + -16x + x2 = 54 + 64

Combine like terms: 54 + 64 = 118
64 + -16x + x2 = 118

Factor a perfect square on the left side:
(x + -8)(x + -8) = 118

Calculate the square root of the right side: 10.862780491

Break this problem into two subproblems by setting 
(x + -8) equal to 10.862780491 and -10.862780491.

Subproblem 1

x + -8 = 10.862780491 Simplifying x + -8 = 10.862780491 Reorder the terms: -8 + x = 10.862780491 Solving -8 + x = 10.862780491 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = 10.862780491 + 8 Combine like terms: -8 + 8 = 0 0 + x = 10.862780491 + 8 x = 10.862780491 + 8 Combine like terms: 10.862780491 + 8 = 18.862780491 x = 18.862780491 Simplifying x = 18.862780491

Subproblem 2

x + -8 = -10.862780491 Simplifying x + -8 = -10.862780491 Reorder the terms: -8 + x = -10.862780491 Solving -8 + x = -10.862780491 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = -10.862780491 + 8 Combine like terms: -8 + 8 = 0 0 + x = -10.862780491 + 8 x = -10.862780491 + 8 Combine like terms: -10.862780491 + 8 = -2.862780491 x = -2.862780491 Simplifying x = -2.862780491

Solution

The solution to the problem is based on the solutions from the subproblems. x = {18.862780491, -2.862780491}

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