w^2+7w+40=0

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Solution for w^2+7w+40=0 equation:


Simplifying
w2 + 7w + 40 = 0

Reorder the terms:
40 + 7w + w2 = 0

Solving
40 + 7w + w2 = 0

Solving for variable 'w'.

Begin completing the square.

Move the constant term to the right:

Add '-40' to each side of the equation.
40 + 7w + -40 + w2 = 0 + -40

Reorder the terms:
40 + -40 + 7w + w2 = 0 + -40

Combine like terms: 40 + -40 = 0
0 + 7w + w2 = 0 + -40
7w + w2 = 0 + -40

Combine like terms: 0 + -40 = -40
7w + w2 = -40

The w term is 7w.  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.
7w + 12.25 + w2 = -40 + 12.25

Reorder the terms:
12.25 + 7w + w2 = -40 + 12.25

Combine like terms: -40 + 12.25 = -27.75
12.25 + 7w + w2 = -27.75

Factor a perfect square on the left side:
(w + 3.5)(w + 3.5) = -27.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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