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Simplifying
9(w2 + -2) = 9
Reorder the terms:
9(-2 + w2) = 9
(-2 * 9 + w2 * 9) = 9
(-18 + 9w2) = 9
Solving
-18 + 9w2 = 9
Solving for variable 'w'.
Move all terms containing w to the left, all other terms to the right.
Add '18' to each side of the equation.
-18 + 18 + 9w2 = 9 + 18
Combine like terms: -18 + 18 = 0
0 + 9w2 = 9 + 18
9w2 = 9 + 18
Combine like terms: 9 + 18 = 27
9w2 = 27
Divide each side by '9'.
w2 = 3
Simplifying
w2 = 3
Take the square root of each side:
w = {-1.732050808, 1.732050808}
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