How do you simplify −3+2i2−5i?

1 Answer
Shwetank Mauria
Jun 30, 2016

−3+2i2−5i=−1629−1129i

Explanation:

To simplify −3+2i2−5i, we need to multiply numerator and denominator by complex conjugate of the denominator i.e. here 2+5i.

Hence, −3+2i2−5i=(−3+2i)(2+5i)(2−5i)(2+5i)

= −6−15i+4i+10i24−25i2

= −6−15i+4i−104+25

= −16−11i29=−1629−1129i

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