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Simplifying
-3w2 + 8 = -20
Reorder the terms:
8 + -3w2 = -20
Solving
8 + -3w2 = -20
Solving for variable 'w'.
Move all terms containing w to the left, all other terms to the right.
Add '-8' to each side of the equation.
8 + -8 + -3w2 = -20 + -8
Combine like terms: 8 + -8 = 0
0 + -3w2 = -20 + -8
-3w2 = -20 + -8
Combine like terms: -20 + -8 = -28
-3w2 = -28
Divide each side by '-3'.
w2 = 9.333333333
Simplifying
w2 = 9.333333333
Take the square root of each side:
w = {-3.055050463, 3.055050463}
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