Mathematics: Rationalize the denominator of sqrt -9 / (4-7i) - (6-6i)

Rationalize the denominator of sqrt -9 / (4-7i) -

Ответ:

hbked23

04.01.2022

√(- 9 ) / (( 4 - 7 i ) - ( 6 - 6 i )) = 3 i / ( 4 - 7 i - 6 + 6 i ) =
= 3 i / ( - 2 - i ) = - 3 i / ( 2 + i ) =
$= \frac{-3i}{2 + i}* \frac{2 - i}{2 - i}= \\ = \frac{-6i+3i ^{2} }{2- i^{2} }= \\ = \frac{-3-6i}{2+1}= \frac{-3-6i}{3}=$
= - 1 - 2 i

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Ответ:

coolkitty35

05.03.2021

Mathematics

its B

Step-by-step explanation:

i had this answer and guest on it and i made a hundred! :D

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Rationalize the denominator of sqrt -9 / (4-7i) - (6-6i)

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