(-4+2i)(7-2i)
Anyone know how to do this??
1 answer:
Answer:
<h2>
-24 + 22i</h2>
Step-by-step explanation:
Use the FOIL method of multiplication of binomials:
(-4+2i)(7-2i) = -28 + 14i + 8i - (-4)i²
Note that i² = -1. Thus, - (-4)i² = +4, and we then have:
-28 + 22i + 4, or
-24 + 22i
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