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OpenStudy (anonymous):
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OpenStudy (anonymous):
\[(5Z+2)^{2}=-81\]
OpenStudy (asylum15):
Solve for Z?
OpenStudy (anonymous):
Yes
OpenStudy (asylum15):
(5Z+2)^2 = (5Z+2)(5Z+2) = 25Z^2+10Z + 10Z + 4 25Z^2 + 20Z + 4 = -81 25Z^2+20Z + 4 + 81 = 0 25Z^2+20Z + 85 = 0 Divide across by 5 5Z^2 + 4Z + 17 = 0 Quadratic equation you can solve using -b formula or factors.
OpenStudy (asylum15):
Do you understand? xD
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OpenStudy (anonymous):
Yes thank you!
OpenStudy (asylum15):
Respect.
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