ahanifpk ahanifpk

04-04-2020
Mathematics

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BRAINLIEST!!!
15. Simplify. (6 + 5i)(10 – 15i)

A. 135 – 40i

B. 60 – 40i + 75

C. 60 – 40i – 75i2

D. 81 + 50i

Respuesta :

mmaashiq mmaashiq

04-04-2020

Answer:

c) 60-40i-75i^2

Step-by-step explanation:

first you multiply out the brackets then collect like terms to get the answer

Answer Link

elichan elichan

04-04-2020

(6 + 5i)(10- 15i)
60- 90i +50i - 75i2
60- 40i -75i2
Answer is C

Answer Link

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