freemanxu0 freemanxu0
  • 24-12-2020
  • Mathematics
contestada

this is a sat practice. need help
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this is a sat practice need help class=

Respuesta :

Аноним Аноним
  • 24-12-2020

Answer:

The answer is A) -1 + 12i

Step-by-step explanation:

(7 + 3i) + (-8 + 9i)

(7 - 8) + (3 + 9)i

7 - 8 = - 1

3 + 9 = 12

- 1 + 12

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ozieltijerina
ozieltijerina ozieltijerina
  • 25-12-2020
So you would have

(7+3i)+(-8+9i)

You go ahead and rewrite it like this

7-8+3i+9i

And then combine like terms

-1+12i

So your answer is A
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