9x^2+76=54x

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Solution for 9x^2+76=54x equation:


Simplifying
9x2 + 76 = 54x

Reorder the terms:
76 + 9x2 = 54x

Solving
76 + 9x2 = 54x

Solving for variable 'x'.

Reorder the terms:
76 + -54x + 9x2 = 54x + -54x

Combine like terms: 54x + -54x = 0
76 + -54x + 9x2 = 0

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

Divide each side by '9'.
8.444444444 + -6x + x2 = 0

Move the constant term to the right:

Add '-8.444444444' to each side of the equation.
8.444444444 + -6x + -8.444444444 + x2 = 0 + -8.444444444

Reorder the terms:
8.444444444 + -8.444444444 + -6x + x2 = 0 + -8.444444444

Combine like terms: 8.444444444 + -8.444444444 = 0.000000000
0.000000000 + -6x + x2 = 0 + -8.444444444
-6x + x2 = 0 + -8.444444444

Combine like terms: 0 + -8.444444444 = -8.444444444
-6x + x2 = -8.444444444

The x term is -6x.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6x + 9 + x2 = -8.444444444 + 9

Reorder the terms:
9 + -6x + x2 = -8.444444444 + 9

Combine like terms: -8.444444444 + 9 = 0.555555556
9 + -6x + x2 = 0.555555556

Factor a perfect square on the left side:
(x + -3)(x + -3) = 0.555555556

Calculate the square root of the right side: 0.745355993

Break this problem into two subproblems by setting 
(x + -3) equal to 0.745355993 and -0.745355993.

Subproblem 1

x + -3 = 0.745355993 Simplifying x + -3 = 0.745355993 Reorder the terms: -3 + x = 0.745355993 Solving -3 + x = 0.745355993 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 0.745355993 + 3 Combine like terms: -3 + 3 = 0 0 + x = 0.745355993 + 3 x = 0.745355993 + 3 Combine like terms: 0.745355993 + 3 = 3.745355993 x = 3.745355993 Simplifying x = 3.745355993

Subproblem 2

x + -3 = -0.745355993 Simplifying x + -3 = -0.745355993 Reorder the terms: -3 + x = -0.745355993 Solving -3 + x = -0.745355993 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -0.745355993 + 3 Combine like terms: -3 + 3 = 0 0 + x = -0.745355993 + 3 x = -0.745355993 + 3 Combine like terms: -0.745355993 + 3 = 2.254644007 x = 2.254644007 Simplifying x = 2.254644007

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.745355993, 2.254644007}

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