x(x+28)=196

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Solution for x(x+28)=196 equation:


Simplifying
x(x + 28) = 196

Reorder the terms:
x(28 + x) = 196
(28 * x + x * x) = 196
(28x + x2) = 196

Solving
28x + x2 = 196

Solving for variable 'x'.

Reorder the terms:
-196 + 28x + x2 = 196 + -196

Combine like terms: 196 + -196 = 0
-196 + 28x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '196' to each side of the equation.
-196 + 28x + 196 + x2 = 0 + 196

Reorder the terms:
-196 + 196 + 28x + x2 = 0 + 196

Combine like terms: -196 + 196 = 0
0 + 28x + x2 = 0 + 196
28x + x2 = 0 + 196

Combine like terms: 0 + 196 = 196
28x + x2 = 196

The x term is 28x.  Take half its coefficient (14).
Square it (196) and add it to both sides.

Add '196' to each side of the equation.
28x + 196 + x2 = 196 + 196

Reorder the terms:
196 + 28x + x2 = 196 + 196

Combine like terms: 196 + 196 = 392
196 + 28x + x2 = 392

Factor a perfect square on the left side:
(x + 14)(x + 14) = 392

Calculate the square root of the right side: 19.798989873

Break this problem into two subproblems by setting 
(x + 14) equal to 19.798989873 and -19.798989873.

Subproblem 1

x + 14 = 19.798989873 Simplifying x + 14 = 19.798989873 Reorder the terms: 14 + x = 19.798989873 Solving 14 + x = 19.798989873 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + x = 19.798989873 + -14 Combine like terms: 14 + -14 = 0 0 + x = 19.798989873 + -14 x = 19.798989873 + -14 Combine like terms: 19.798989873 + -14 = 5.798989873 x = 5.798989873 Simplifying x = 5.798989873

Subproblem 2

x + 14 = -19.798989873 Simplifying x + 14 = -19.798989873 Reorder the terms: 14 + x = -19.798989873 Solving 14 + x = -19.798989873 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + x = -19.798989873 + -14 Combine like terms: 14 + -14 = 0 0 + x = -19.798989873 + -14 x = -19.798989873 + -14 Combine like terms: -19.798989873 + -14 = -33.798989873 x = -33.798989873 Simplifying x = -33.798989873

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.798989873, -33.798989873}

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