(4x+9)x-49=501

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Solution for (4x+9)x-49=501 equation:


Simplifying
(4x + 9) * x + -49 = 501

Reorder the terms:
(9 + 4x) * x + -49 = 501

Reorder the terms for easier multiplication:
x(9 + 4x) + -49 = 501
(9 * x + 4x * x) + -49 = 501
(9x + 4x2) + -49 = 501

Reorder the terms:
-49 + 9x + 4x2 = 501

Solving
-49 + 9x + 4x2 = 501

Solving for variable 'x'.

Reorder the terms:
-49 + -501 + 9x + 4x2 = 501 + -501

Combine like terms: -49 + -501 = -550
-550 + 9x + 4x2 = 501 + -501

Combine like terms: 501 + -501 = 0
-550 + 9x + 4x2 = 0

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

Divide each side by '4'.
-137.5 + 2.25x + x2 = 0

Move the constant term to the right:

Add '137.5' to each side of the equation.
-137.5 + 2.25x + 137.5 + x2 = 0 + 137.5

Reorder the terms:
-137.5 + 137.5 + 2.25x + x2 = 0 + 137.5

Combine like terms: -137.5 + 137.5 = 0.0
0.0 + 2.25x + x2 = 0 + 137.5
2.25x + x2 = 0 + 137.5

Combine like terms: 0 + 137.5 = 137.5
2.25x + x2 = 137.5

The x term is 2.25x.  Take half its coefficient (1.125).
Square it (1.265625) and add it to both sides.

Add '1.265625' to each side of the equation.
2.25x + 1.265625 + x2 = 137.5 + 1.265625

Reorder the terms:
1.265625 + 2.25x + x2 = 137.5 + 1.265625

Combine like terms: 137.5 + 1.265625 = 138.765625
1.265625 + 2.25x + x2 = 138.765625

Factor a perfect square on the left side:
(x + 1.125)(x + 1.125) = 138.765625

Calculate the square root of the right side: 11.779882215

Break this problem into two subproblems by setting 
(x + 1.125) equal to 11.779882215 and -11.779882215.

Subproblem 1

x + 1.125 = 11.779882215 Simplifying x + 1.125 = 11.779882215 Reorder the terms: 1.125 + x = 11.779882215 Solving 1.125 + x = 11.779882215 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.125' to each side of the equation. 1.125 + -1.125 + x = 11.779882215 + -1.125 Combine like terms: 1.125 + -1.125 = 0.000 0.000 + x = 11.779882215 + -1.125 x = 11.779882215 + -1.125 Combine like terms: 11.779882215 + -1.125 = 10.654882215 x = 10.654882215 Simplifying x = 10.654882215

Subproblem 2

x + 1.125 = -11.779882215 Simplifying x + 1.125 = -11.779882215 Reorder the terms: 1.125 + x = -11.779882215 Solving 1.125 + x = -11.779882215 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.125' to each side of the equation. 1.125 + -1.125 + x = -11.779882215 + -1.125 Combine like terms: 1.125 + -1.125 = 0.000 0.000 + x = -11.779882215 + -1.125 x = -11.779882215 + -1.125 Combine like terms: -11.779882215 + -1.125 = -12.904882215 x = -12.904882215 Simplifying x = -12.904882215

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.654882215, -12.904882215}

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