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If by w2 you mean "w squared", then it cannot be done.

BECAUSE

w2 + 49 = 0

w2 +49 - 49 = 0 - 49

w2 = -49

w2 means a number multiplied by itself. Any number multplied by itself will result in a POSITIVE number.

positive x positive = positive

negative x negative = negatve

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Q: How do you solve w2 plus 49 equals 0?
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