x^2+14x+49=17

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Solution for x^2+14x+49=17 equation:


Simplifying
x2 + 14x + 49 = 17

Reorder the terms:
49 + 14x + x2 = 17

Solving
49 + 14x + x2 = 17

Solving for variable 'x'.

Reorder the terms:
49 + -17 + 14x + x2 = 17 + -17

Combine like terms: 49 + -17 = 32
32 + 14x + x2 = 17 + -17

Combine like terms: 17 + -17 = 0
32 + 14x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-32' to each side of the equation.
32 + 14x + -32 + x2 = 0 + -32

Reorder the terms:
32 + -32 + 14x + x2 = 0 + -32

Combine like terms: 32 + -32 = 0
0 + 14x + x2 = 0 + -32
14x + x2 = 0 + -32

Combine like terms: 0 + -32 = -32
14x + x2 = -32

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 = -32 + 49

Reorder the terms:
49 + 14x + x2 = -32 + 49

Combine like terms: -32 + 49 = 17
49 + 14x + x2 = 17

Factor a perfect square on the left side:
(x + 7)(x + 7) = 17

Calculate the square root of the right side: 4.123105626

Break this problem into two subproblems by setting 
(x + 7) equal to 4.123105626 and -4.123105626.

Subproblem 1

x + 7 = 4.123105626 Simplifying x + 7 = 4.123105626 Reorder the terms: 7 + x = 4.123105626 Solving 7 + x = 4.123105626 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 = 4.123105626 + -7 Combine like terms: 7 + -7 = 0 0 + x = 4.123105626 + -7 x = 4.123105626 + -7 Combine like terms: 4.123105626 + -7 = -2.876894374 x = -2.876894374 Simplifying x = -2.876894374

Subproblem 2

x + 7 = -4.123105626 Simplifying x + 7 = -4.123105626 Reorder the terms: 7 + x = -4.123105626 Solving 7 + x = -4.123105626 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 = -4.123105626 + -7 Combine like terms: 7 + -7 = 0 0 + x = -4.123105626 + -7 x = -4.123105626 + -7 Combine like terms: -4.123105626 + -7 = -11.123105626 x = -11.123105626 Simplifying x = -11.123105626

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-2.876894374, -11.123105626}

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