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

Asked by maham237 @ 25/12/2020 in Mathematics viewed by 347 People

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

Answered by maham237 @ 25/12/2020

(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

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