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Simplifying
9(w2 + -18) = 9
Reorder the terms:
9(-18 + w2) = 9
(-18 * 9 + w2 * 9) = 9
(-162 + 9w2) = 9
Solving
-162 + 9w2 = 9
Solving for variable 'w'.
Move all terms containing w to the left, all other terms to the right.
Add '162' to each side of the equation.
-162 + 162 + 9w2 = 9 + 162
Combine like terms: -162 + 162 = 0
0 + 9w2 = 9 + 162
9w2 = 9 + 162
Combine like terms: 9 + 162 = 171
9w2 = 171
Divide each side by '9'.
w2 = 19
Simplifying
w2 = 19
Take the square root of each side:
w = {-4.358898944, 4.358898944}
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