How to Simplifiy? THANKS

Question

(3i)(6i^2) ( have to simplifiy) Not good with imaginary numbers:(

Thanks again

Answer 1

i² = -1

 

(3i)(6i²) = (3i)(6*(-1)) = (3i)*(-6) = -18i

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Answer 2

Hi Youssef,

 

   
(3i)(6i^2) ( have to simplifiy) Not good with imaginary numbers:(
Thanks again

 

 

i = √(-1)

i² =-1

 

(3i)(6i²)

= (3i)[6(-1)]

=(3i)(-6)

=-18i

 

ANSWER:   -18i

 

Hope this helps you understand the process.