-3.5=2x^2+14x+26

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Solution for -3.5=2x^2+14x+26 equation:


Simplifying
-3.5 = 2x2 + 14x + 26

Reorder the terms:
-3.5 = 26 + 14x + 2x2

Solving
-3.5 = 26 + 14x + 2x2

Solving for variable 'x'.

Combine like terms: -3.5 + -26 = -29.5
-29.5 + -14x + -2x2 = 26 + 14x + 2x2 + -26 + -14x + -2x2

Reorder the terms:
-29.5 + -14x + -2x2 = 26 + -26 + 14x + -14x + 2x2 + -2x2

Combine like terms: 26 + -26 = 0
-29.5 + -14x + -2x2 = 0 + 14x + -14x + 2x2 + -2x2
-29.5 + -14x + -2x2 = 14x + -14x + 2x2 + -2x2

Combine like terms: 14x + -14x = 0
-29.5 + -14x + -2x2 = 0 + 2x2 + -2x2
-29.5 + -14x + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
-29.5 + -14x + -2x2 = 0

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

Divide each side by '-2'.
14.75 + 7x + x2 = 0

Move the constant term to the right:

Add '-14.75' to each side of the equation.
14.75 + 7x + -14.75 + x2 = 0 + -14.75

Reorder the terms:
14.75 + -14.75 + 7x + x2 = 0 + -14.75

Combine like terms: 14.75 + -14.75 = 0.00
0.00 + 7x + x2 = 0 + -14.75
7x + x2 = 0 + -14.75

Combine like terms: 0 + -14.75 = -14.75
7x + x2 = -14.75

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 = -14.75 + 12.25

Reorder the terms:
12.25 + 7x + x2 = -14.75 + 12.25

Combine like terms: -14.75 + 12.25 = -2.5
12.25 + 7x + x2 = -2.5

Factor a perfect square on the left side:
(x + 3.5)(x + 3.5) = -2.5

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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