Which expression is equivalent to(4+6i)^2

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asked Feb 25, 2019 43.4k views

2 Answers

Lloan · Answer 1 · 2019-03-01T14:47:01+0000

(4 + 6i)^2 = (4 + 6i)(4 + 6i)

Use the FOIL method

4(4) = 16

4(6i) = 24i

6i(4) = 24i

6i(6i) = 36i², or -36 (note, i² = -1)

24i + 24i = 48i

16 + 48i - 36 = 48i - 20

48i - 20 is your answer

hope this helps

Which expression is equivalent to(4+6i)^2

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