x^2+14x+49=3.0625

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Solution for x^2+14x+49=3.0625 equation:


Simplifying
x2 + 14x + 49 = 3.0625

Reorder the terms:
49 + 14x + x2 = 3.0625

Solving
49 + 14x + x2 = 3.0625

Solving for variable 'x'.

Reorder the terms:
49 + -3.0625 + 14x + x2 = 3.0625 + -3.0625

Combine like terms: 49 + -3.0625 = 45.9375
45.9375 + 14x + x2 = 3.0625 + -3.0625

Combine like terms: 3.0625 + -3.0625 = 0.0000
45.9375 + 14x + x2 = 0.0000

Begin completing the square.

Move the constant term to the right:

Add '-45.9375' to each side of the equation.
45.9375 + 14x + -45.9375 + x2 = 0.0000 + -45.9375

Reorder the terms:
45.9375 + -45.9375 + 14x + x2 = 0.0000 + -45.9375

Combine like terms: 45.9375 + -45.9375 = 0.0000
0.0000 + 14x + x2 = 0.0000 + -45.9375
14x + x2 = 0.0000 + -45.9375

Combine like terms: 0.0000 + -45.9375 = -45.9375
14x + x2 = -45.9375

The x term is 14x.  Take half its coefficient (7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
14x + 49 + x2 = -45.9375 + 49

Reorder the terms:
49 + 14x + x2 = -45.9375 + 49

Combine like terms: -45.9375 + 49 = 3.0625
49 + 14x + x2 = 3.0625

Factor a perfect square on the left side:
(x + 7)(x + 7) = 3.0625

Calculate the square root of the right side: 1.75

Break this problem into two subproblems by setting 
(x + 7) equal to 1.75 and -1.75.

Subproblem 1

x + 7 = 1.75 Simplifying x + 7 = 1.75 Reorder the terms: 7 + x = 1.75 Solving 7 + x = 1.75 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = 1.75 + -7 Combine like terms: 7 + -7 = 0 0 + x = 1.75 + -7 x = 1.75 + -7 Combine like terms: 1.75 + -7 = -5.25 x = -5.25 Simplifying x = -5.25

Subproblem 2

x + 7 = -1.75 Simplifying x + 7 = -1.75 Reorder the terms: 7 + x = -1.75 Solving 7 + x = -1.75 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = -1.75 + -7 Combine like terms: 7 + -7 = 0 0 + x = -1.75 + -7 x = -1.75 + -7 Combine like terms: -1.75 + -7 = -8.75 x = -8.75 Simplifying x = -8.75

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-5.25, -8.75}

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