x^2+56x+768=1174.25

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Solution for x^2+56x+768=1174.25 equation:


Simplifying
x2 + 56x + 768 = 1174.25

Reorder the terms:
768 + 56x + x2 = 1174.25

Solving
768 + 56x + x2 = 1174.25

Solving for variable 'x'.

Reorder the terms:
768 + -1174.25 + 56x + x2 = 1174.25 + -1174.25

Combine like terms: 768 + -1174.25 = -406.25
-406.25 + 56x + x2 = 1174.25 + -1174.25

Combine like terms: 1174.25 + -1174.25 = 0.00
-406.25 + 56x + x2 = 0.00

Begin completing the square.

Move the constant term to the right:

Add '406.25' to each side of the equation.
-406.25 + 56x + 406.25 + x2 = 0.00 + 406.25

Reorder the terms:
-406.25 + 406.25 + 56x + x2 = 0.00 + 406.25

Combine like terms: -406.25 + 406.25 = 0.00
0.00 + 56x + x2 = 0.00 + 406.25
56x + x2 = 0.00 + 406.25

Combine like terms: 0.00 + 406.25 = 406.25
56x + x2 = 406.25

The x term is 56x.  Take half its coefficient (28).
Square it (784) and add it to both sides.

Add '784' to each side of the equation.
56x + 784 + x2 = 406.25 + 784

Reorder the terms:
784 + 56x + x2 = 406.25 + 784

Combine like terms: 406.25 + 784 = 1190.25
784 + 56x + x2 = 1190.25

Factor a perfect square on the left side:
(x + 28)(x + 28) = 1190.25

Calculate the square root of the right side: 34.5

Break this problem into two subproblems by setting 
(x + 28) equal to 34.5 and -34.5.

Subproblem 1

x + 28 = 34.5 Simplifying x + 28 = 34.5 Reorder the terms: 28 + x = 34.5 Solving 28 + x = 34.5 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-28' to each side of the equation. 28 + -28 + x = 34.5 + -28 Combine like terms: 28 + -28 = 0 0 + x = 34.5 + -28 x = 34.5 + -28 Combine like terms: 34.5 + -28 = 6.5 x = 6.5 Simplifying x = 6.5

Subproblem 2

x + 28 = -34.5 Simplifying x + 28 = -34.5 Reorder the terms: 28 + x = -34.5 Solving 28 + x = -34.5 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-28' to each side of the equation. 28 + -28 + x = -34.5 + -28 Combine like terms: 28 + -28 = 0 0 + x = -34.5 + -28 x = -34.5 + -28 Combine like terms: -34.5 + -28 = -62.5 x = -62.5 Simplifying x = -62.5

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.5, -62.5}

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