PR521
PR521
04-02-2017
Mathematics
contestada
I'm confused on how to solve this: What is 5i+7i x i
Respuesta :
hplawson
hplawson
04-02-2017
5i +7i is 12i
12i times I is 12i^2
I^2 is equal to -1
So 12(-1) is -12
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