Question

Simplify (9 + 7i)/(-10 + 8i)

Answer 1

multiply numerator and denominator by -10-8i which is the adjacent number to -10-8i

what do you get ?

Answer 2

Oh, divide sorry.

Answer 3

here ?

Answer 4

in order to get rid of the complex denominator you should multiply by the adjacent number of the denominator

so you get :

[(9 + 7i)/(-10 + 8i)] * [(-10-8i)/(-10-8i)]

[(9+7i)(-10-8i)] / [(-10+8i)(-10-8i)]

[(9+7i)(-10-8i)] / (100 + 64)

Answer 5

can you go from here ?