d^2+7d+17=0

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Solution for d^2+7d+17=0 equation:


Simplifying
d2 + 7d + 17 = 0

Reorder the terms:
17 + 7d + d2 = 0

Solving
17 + 7d + d2 = 0

Solving for variable 'd'.

Begin completing the square.

Move the constant term to the right:

Add '-17' to each side of the equation.
17 + 7d + -17 + d2 = 0 + -17

Reorder the terms:
17 + -17 + 7d + d2 = 0 + -17

Combine like terms: 17 + -17 = 0
0 + 7d + d2 = 0 + -17
7d + d2 = 0 + -17

Combine like terms: 0 + -17 = -17
7d + d2 = -17

The d term is 7d.  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.
7d + 12.25 + d2 = -17 + 12.25

Reorder the terms:
12.25 + 7d + d2 = -17 + 12.25

Combine like terms: -17 + 12.25 = -4.75
12.25 + 7d + d2 = -4.75

Factor a perfect square on the left side:
(d + 3.5)(d + 3.5) = -4.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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