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OpenStudy (anonymous):
simplify the expression. (-6i)(-4i)
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OpenStudy (danjs):
recall that i^2 = -1
OpenStudy (danjs):
(-6)(-4) x i^2
OpenStudy (anonymous):
yes, so would it be 24 or 24i?
OpenStudy (danjs):
-24
OpenStudy (anonymous):
-24?
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OpenStudy (danjs):
-6*-4 = 24 24i^2 = 24(-1) = -24
OpenStudy (anonymous):
ohh, i see now! Thank you so much
OpenStudy (danjs):
is that the imaginary number, or just a variable i?
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