shelbyp2003
shelbyp2003 shelbyp2003
  • 20-12-2017
  • Mathematics
contestada

simplify this expression (-4-9i)+(5-7i)

Respuesta :

bob3141
bob3141 bob3141
  • 20-12-2017
To simplify you combine like terms. 
You open parenthesis-
-4 - 9i + 5 - 7i
combine like terms-
1 - 16i   is your answer. 
Hope this helps!

Answer Link
tonb
tonb tonb
  • 20-12-2017
You can simplify the real and imaginary parts independently:

-4+5 = 1
-9i-7i = -16i

So the simplified expression is 1-16i
Answer Link

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