7w^2-16w=-100

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Solution for 7w^2-16w=-100 equation:


Simplifying
7w2 + -16w = -100

Reorder the terms:
-16w + 7w2 = -100

Solving
-16w + 7w2 = -100

Solving for variable 'w'.

Reorder the terms:
100 + -16w + 7w2 = -100 + 100

Combine like terms: -100 + 100 = 0
100 + -16w + 7w2 = 0

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

Divide each side by '7'.
14.28571429 + -2.285714286w + w2 = 0

Move the constant term to the right:

Add '-14.28571429' to each side of the equation.
14.28571429 + -2.285714286w + -14.28571429 + w2 = 0 + -14.28571429

Reorder the terms:
14.28571429 + -14.28571429 + -2.285714286w + w2 = 0 + -14.28571429

Combine like terms: 14.28571429 + -14.28571429 = 0.00000000
0.00000000 + -2.285714286w + w2 = 0 + -14.28571429
-2.285714286w + w2 = 0 + -14.28571429

Combine like terms: 0 + -14.28571429 = -14.28571429
-2.285714286w + w2 = -14.28571429

The w term is -2.285714286w.  Take half its coefficient (-1.142857143).
Square it (1.306122449) and add it to both sides.

Add '1.306122449' to each side of the equation.
-2.285714286w + 1.306122449 + w2 = -14.28571429 + 1.306122449

Reorder the terms:
1.306122449 + -2.285714286w + w2 = -14.28571429 + 1.306122449

Combine like terms: -14.28571429 + 1.306122449 = -12.979591841
1.306122449 + -2.285714286w + w2 = -12.979591841

Factor a perfect square on the left side:
(w + -1.142857143)(w + -1.142857143) = -12.979591841

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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