ianlangston
ianlangston ianlangston
  • 20-06-2017
  • Mathematics
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simplify (4 − 10i) − (5 − 7i)

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lilfathoff
lilfathoff lilfathoff
  • 20-06-2017
4−10i−(5−7i)
4-10i-1*5-7i*-1
4-10i-5+7i

Re-Arrange with like terms:
(-5+1)+(-10i+7i)
(-1)+(-3i)

=−1−3i

ANSWER: 
−1−3i

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