w^2-7w+120=0

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Solution for w^2-7w+120=0 equation:


Simplifying
w2 + -7w + 120 = 0

Reorder the terms:
120 + -7w + w2 = 0

Solving
120 + -7w + w2 = 0

Solving for variable 'w'.

Begin completing the square.

Move the constant term to the right:

Add '-120' to each side of the equation.
120 + -7w + -120 + w2 = 0 + -120

Reorder the terms:
120 + -120 + -7w + w2 = 0 + -120

Combine like terms: 120 + -120 = 0
0 + -7w + w2 = 0 + -120
-7w + w2 = 0 + -120

Combine like terms: 0 + -120 = -120
-7w + w2 = -120

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 = -120 + 12.25

Reorder the terms:
12.25 + -7w + w2 = -120 + 12.25

Combine like terms: -120 + 12.25 = -107.75
12.25 + -7w + w2 = -107.75

Factor a perfect square on the left side:
(w + -3.5)(w + -3.5) = -107.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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