Answer: B) -56i - 24
This is the same as -24 - 56i
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Explanation:
The 'i' refers to the imaginary number [tex]\sqrt{-1}[/tex]
In other words, [tex]i = \sqrt{-1}[/tex]
Squaring both sides gets us [tex]i^2 = -1[/tex]
So,
[tex]x = -8(7i - 3i^2)\\\\x = -8(7i - 3(-1))\\\\x = -8(7i + 3)\\\\x = -8(7i) -8(3)\\\\x = -56i -24 \ \ \text{ .... Answer: Choice B}\\\\x = -24 - 56i\\\\[/tex]
The result is in the form a+bi where a = -24 is the real part and b = -56 is the imaginary part.
