x^2+x^2+7x+49=1225

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Solution for x^2+x^2+7x+49=1225 equation:


Simplifying
x2 + x2 + 7x + 49 = 1225

Reorder the terms:
49 + 7x + x2 + x2 = 1225

Combine like terms: x2 + x2 = 2x2
49 + 7x + 2x2 = 1225

Solving
49 + 7x + 2x2 = 1225

Solving for variable 'x'.

Reorder the terms:
49 + -1225 + 7x + 2x2 = 1225 + -1225

Combine like terms: 49 + -1225 = -1176
-1176 + 7x + 2x2 = 1225 + -1225

Combine like terms: 1225 + -1225 = 0
-1176 + 7x + 2x2 = 0

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

Divide each side by '2'.
-588 + 3.5x + x2 = 0

Move the constant term to the right:

Add '588' to each side of the equation.
-588 + 3.5x + 588 + x2 = 0 + 588

Reorder the terms:
-588 + 588 + 3.5x + x2 = 0 + 588

Combine like terms: -588 + 588 = 0
0 + 3.5x + x2 = 0 + 588
3.5x + x2 = 0 + 588

Combine like terms: 0 + 588 = 588
3.5x + x2 = 588

The x term is 3.5x.  Take half its coefficient (1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
3.5x + 3.0625 + x2 = 588 + 3.0625

Reorder the terms:
3.0625 + 3.5x + x2 = 588 + 3.0625

Combine like terms: 588 + 3.0625 = 591.0625
3.0625 + 3.5x + x2 = 591.0625

Factor a perfect square on the left side:
(x + 1.75)(x + 1.75) = 591.0625

Calculate the square root of the right side: 24.311776982

Break this problem into two subproblems by setting 
(x + 1.75) equal to 24.311776982 and -24.311776982.

Subproblem 1

x + 1.75 = 24.311776982 Simplifying x + 1.75 = 24.311776982 Reorder the terms: 1.75 + x = 24.311776982 Solving 1.75 + x = 24.311776982 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + x = 24.311776982 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = 24.311776982 + -1.75 x = 24.311776982 + -1.75 Combine like terms: 24.311776982 + -1.75 = 22.561776982 x = 22.561776982 Simplifying x = 22.561776982

Subproblem 2

x + 1.75 = -24.311776982 Simplifying x + 1.75 = -24.311776982 Reorder the terms: 1.75 + x = -24.311776982 Solving 1.75 + x = -24.311776982 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + x = -24.311776982 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = -24.311776982 + -1.75 x = -24.311776982 + -1.75 Combine like terms: -24.311776982 + -1.75 = -26.061776982 x = -26.061776982 Simplifying x = -26.061776982

Solution

The solution to the problem is based on the solutions from the subproblems. x = {22.561776982, -26.061776982}

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