Hellokittysam007
Hellokittysam007
11-03-2020
Mathematics
contestada
Simplify. (6 + 5i)(10 – 15i)
Respuesta :
ACruzAquino
ACruzAquino
11-03-2020
Answer:
75i^2-140i-60
Answer Link
TheBreeze
TheBreeze
11-03-2020
60 - 90i + 50i - 75i^2
-75i^2 - 40i + 60
In imaginary numbers, i stands for the square root of -1. Knowing this, we know that i^2 is -1. Therefore:
-75(-1) - 40i + 60
75 + 60 - 40i
135 - 40i
Answer Link
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