tiphannyk
28.01.2020 •
Mathematics
Simplify the expression:
(-2-+6i)
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Ответ:
(-2-2i)(-4+6i) = 20 - 4i
Step-by-step explanation:
We have the expression:
(-2 - 2i)*(-4 + 6i)
the rule we need to know here is that i*i = -1
now, the first step is distribute the parentheses.
(-2 - 2i)*(-4 + 6i) = -2*-4 -2*6i - 2i*-4 - 2i*6i = 8 -12i + 8i -12*(i*i)
= 8 + (8 - 12)i +12 = 20 - 4i
Ответ:
unknown
Step-by-step explanation: