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Which epression is equivalent to(4+7i)(3+4i)?​
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1 vote
Which epression is equivalent to(4+7i)(3+4i)?​

User Tolis Gerodimos
by
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2 Answers

4 votes

Using FOIL...

(4+7i)(3+4i) = 12+16i+21i+28i² = 12+37i+28i²

Because i²=-1...

12+37i+28i² = 12+37i+28(-1) = 12+37i-28 = -16+37i

User Chie
by
5.6k points
3 votes

Answer:

(12+12i)

Explanation:

User AtoMerz
by
4.9k points
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