Problema Solution
4i •7i
Answer provided by our tutors
We use the fact that i^2 = -1 and get:
4i*7i = 4*7*i^2 = 28*(-1) = -28
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4i •7i
We use the fact that i^2 = -1 and get:
4i*7i = 4*7*i^2 = 28*(-1) = -28