= -4 + 10i + 10i -25i^2 = -4 + 20i + 25 = 21 + 20i, because i^2 = -1.
The 12th decades every other day every three days and four days all have 12 in common I think
Answer:

Step-by-step explanation:
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Given that:
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To evaluate the expression, we must simply substitute the given value of
, which is
, for
:
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Multiply:
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Subtract:
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-
To check your work, simply set the given expression equal to our solution,
:
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Add
to both sides of the equation:
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Divide both sides of the equation by the coefficient of
, which is
:
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Since it matches the given value of
, our solution is correct!
Answer:
D
Step-by-step explanation:
Answer:
I don't really understand but did u try khan academy?