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OpenStudy (anonymous):
Write the given number in the form a + ib 2i^3 - 3i^2 + 5i
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OpenStudy (anonymous):
Remember that \(i \cdot i = -1\) What will be \(2 \cdot i^3\) in that case?
OpenStudy (anonymous):
ahhhh 2* i and i^2 will just be -1
OpenStudy (anonymous):
-2*i **** thank you!
OpenStudy (anonymous):
right, so \(2i^3 = -2i\)
OpenStudy (anonymous):
You're welcome =) Now just do for \(-3i^2\) as well and sum it all up
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