8w^2-20w+15=0

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Solution for 8w^2-20w+15=0 equation:


Simplifying
8w2 + -20w + 15 = 0

Reorder the terms:
15 + -20w + 8w2 = 0

Solving
15 + -20w + 8w2 = 0

Solving for variable 'w'.

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

Divide each side by '8'.
1.875 + -2.5w + w2 = 0

Move the constant term to the right:

Add '-1.875' to each side of the equation.
1.875 + -2.5w + -1.875 + w2 = 0 + -1.875

Reorder the terms:
1.875 + -1.875 + -2.5w + w2 = 0 + -1.875

Combine like terms: 1.875 + -1.875 = 0.000
0.000 + -2.5w + w2 = 0 + -1.875
-2.5w + w2 = 0 + -1.875

Combine like terms: 0 + -1.875 = -1.875
-2.5w + w2 = -1.875

The w term is -2.5w.  Take half its coefficient (-1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
-2.5w + 1.5625 + w2 = -1.875 + 1.5625

Reorder the terms:
1.5625 + -2.5w + w2 = -1.875 + 1.5625

Combine like terms: -1.875 + 1.5625 = -0.3125
1.5625 + -2.5w + w2 = -0.3125

Factor a perfect square on the left side:
(w + -1.25)(w + -1.25) = -0.3125

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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