2x^2+14x+49=8

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Solution for 2x^2+14x+49=8 equation:


Simplifying
2x2 + 14x + 49 = 8

Reorder the terms:
49 + 14x + 2x2 = 8

Solving
49 + 14x + 2x2 = 8

Solving for variable 'x'.

Reorder the terms:
49 + -8 + 14x + 2x2 = 8 + -8

Combine like terms: 49 + -8 = 41
41 + 14x + 2x2 = 8 + -8

Combine like terms: 8 + -8 = 0
41 + 14x + 2x2 = 0

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

Divide each side by '2'.
20.5 + 7x + x2 = 0

Move the constant term to the right:

Add '-20.5' to each side of the equation.
20.5 + 7x + -20.5 + x2 = 0 + -20.5

Reorder the terms:
20.5 + -20.5 + 7x + x2 = 0 + -20.5

Combine like terms: 20.5 + -20.5 = 0.0
0.0 + 7x + x2 = 0 + -20.5
7x + x2 = 0 + -20.5

Combine like terms: 0 + -20.5 = -20.5
7x + x2 = -20.5

The x term is 7x.  Take half its coefficient (3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
7x + 12.25 + x2 = -20.5 + 12.25

Reorder the terms:
12.25 + 7x + x2 = -20.5 + 12.25

Combine like terms: -20.5 + 12.25 = -8.25
12.25 + 7x + x2 = -8.25

Factor a perfect square on the left side:
(x + 3.5)(x + 3.5) = -8.25

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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