(7x)(2x+27)=180

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Solution for (7x)(2x+27)=180 equation:


Simplifying
(7x)(2x + 27) = 180

Remove parenthesis around (7x)
7x(2x + 27) = 180

Reorder the terms:
7x(27 + 2x) = 180
(27 * 7x + 2x * 7x) = 180
(189x + 14x2) = 180

Solving
189x + 14x2 = 180

Solving for variable 'x'.

Reorder the terms:
-180 + 189x + 14x2 = 180 + -180

Combine like terms: 180 + -180 = 0
-180 + 189x + 14x2 = 0

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

Divide each side by '14'.
-12.85714286 + 13.5x + x2 = 0

Move the constant term to the right:

Add '12.85714286' to each side of the equation.
-12.85714286 + 13.5x + 12.85714286 + x2 = 0 + 12.85714286

Reorder the terms:
-12.85714286 + 12.85714286 + 13.5x + x2 = 0 + 12.85714286

Combine like terms: -12.85714286 + 12.85714286 = 0.00000000
0.00000000 + 13.5x + x2 = 0 + 12.85714286
13.5x + x2 = 0 + 12.85714286

Combine like terms: 0 + 12.85714286 = 12.85714286
13.5x + x2 = 12.85714286

The x term is 13.5x.  Take half its coefficient (6.75).
Square it (45.5625) and add it to both sides.

Add '45.5625' to each side of the equation.
13.5x + 45.5625 + x2 = 12.85714286 + 45.5625

Reorder the terms:
45.5625 + 13.5x + x2 = 12.85714286 + 45.5625

Combine like terms: 12.85714286 + 45.5625 = 58.41964286
45.5625 + 13.5x + x2 = 58.41964286

Factor a perfect square on the left side:
(x + 6.75)(x + 6.75) = 58.41964286

Calculate the square root of the right side: 7.643274355

Break this problem into two subproblems by setting 
(x + 6.75) equal to 7.643274355 and -7.643274355.

Subproblem 1

x + 6.75 = 7.643274355 Simplifying x + 6.75 = 7.643274355 Reorder the terms: 6.75 + x = 7.643274355 Solving 6.75 + x = 7.643274355 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6.75' to each side of the equation. 6.75 + -6.75 + x = 7.643274355 + -6.75 Combine like terms: 6.75 + -6.75 = 0.00 0.00 + x = 7.643274355 + -6.75 x = 7.643274355 + -6.75 Combine like terms: 7.643274355 + -6.75 = 0.893274355 x = 0.893274355 Simplifying x = 0.893274355

Subproblem 2

x + 6.75 = -7.643274355 Simplifying x + 6.75 = -7.643274355 Reorder the terms: 6.75 + x = -7.643274355 Solving 6.75 + x = -7.643274355 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6.75' to each side of the equation. 6.75 + -6.75 + x = -7.643274355 + -6.75 Combine like terms: 6.75 + -6.75 = 0.00 0.00 + x = -7.643274355 + -6.75 x = -7.643274355 + -6.75 Combine like terms: -7.643274355 + -6.75 = -14.393274355 x = -14.393274355 Simplifying x = -14.393274355

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.893274355, -14.393274355}

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