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OpenStudy (anonymous):
solve w^2+90w−2000, using the quadratic formula
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OpenStudy (anonymous):
\[w=(-90\pm \sqrt{8100 +8000})/2\]
OpenStudy (anonymous):
so w=-106.4429, or +16.4429
OpenStudy (anonymous):
No, that's wrong. Please ignore. Correct answer is x = -108.4429, or +18.4429
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