ianlangston ianlangston

20-06-2017
Mathematics

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simplify (4 − 10i) − (5 − 7i)

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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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