w^2=9(w-4)

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Solution for w^2=9(w-4) equation:


Simplifying
w2 = 9(w + -4)

Reorder the terms:
w2 = 9(-4 + w)
w2 = (-4 * 9 + w * 9)
w2 = (-36 + 9w)

Solving
w2 = -36 + 9w

Solving for variable 'w'.

Reorder the terms:
36 + -9w + w2 = -36 + 9w + 36 + -9w

Reorder the terms:
36 + -9w + w2 = -36 + 36 + 9w + -9w

Combine like terms: -36 + 36 = 0
36 + -9w + w2 = 0 + 9w + -9w
36 + -9w + w2 = 9w + -9w

Combine like terms: 9w + -9w = 0
36 + -9w + w2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-36' to each side of the equation.
36 + -9w + -36 + w2 = 0 + -36

Reorder the terms:
36 + -36 + -9w + w2 = 0 + -36

Combine like terms: 36 + -36 = 0
0 + -9w + w2 = 0 + -36
-9w + w2 = 0 + -36

Combine like terms: 0 + -36 = -36
-9w + w2 = -36

The w term is -9w.  Take half its coefficient (-4.5).
Square it (20.25) and add it to both sides.

Add '20.25' to each side of the equation.
-9w + 20.25 + w2 = -36 + 20.25

Reorder the terms:
20.25 + -9w + w2 = -36 + 20.25

Combine like terms: -36 + 20.25 = -15.75
20.25 + -9w + w2 = -15.75

Factor a perfect square on the left side:
(w + -4.5)(w + -4.5) = -15.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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