2x(x+7)=-35

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Solution for 2x(x+7)=-35 equation:


Simplifying
2x(x + 7) = -35

Reorder the terms:
2x(7 + x) = -35
(7 * 2x + x * 2x) = -35
(14x + 2x2) = -35

Solving
14x + 2x2 = -35

Solving for variable 'x'.

Reorder the terms:
35 + 14x + 2x2 = -35 + 35

Combine like terms: -35 + 35 = 0
35 + 14x + 2x2 = 0

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

Divide each side by '2'.
17.5 + 7x + x2 = 0

Move the constant term to the right:

Add '-17.5' to each side of the equation.
17.5 + 7x + -17.5 + x2 = 0 + -17.5

Reorder the terms:
17.5 + -17.5 + 7x + x2 = 0 + -17.5

Combine like terms: 17.5 + -17.5 = 0.0
0.0 + 7x + x2 = 0 + -17.5
7x + x2 = 0 + -17.5

Combine like terms: 0 + -17.5 = -17.5
7x + x2 = -17.5

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 = -17.5 + 12.25

Reorder the terms:
12.25 + 7x + x2 = -17.5 + 12.25

Combine like terms: -17.5 + 12.25 = -5.25
12.25 + 7x + x2 = -5.25

Factor a perfect square on the left side:
(x + 3.5)(x + 3.5) = -5.25

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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