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Mathematics 13 Online
OpenStudy (bizzeizzy):

no

OpenStudy (anonymous):

add the 400 to the other side of the equation which sets the total equal to zero. Then use the quadratic formula or your calculator. Which are you allowed?

OpenStudy (anonymous):

If you use your calculator to graph it, you can look at where the graph hits zero. Remember you are pluging in X^4 - 41x^2 + 400

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