anthonygoodwine827 anthonygoodwine827

22-03-2024
Mathematics

contestada

(i) (7i) (-i)
Can someone please help me

Respuesta :

ozieltijerina ozieltijerina

22-03-2024

So this is (7i)(-i)= 7(-1)(i)(i)= -7(i²) and remember that i²=-1 so

-7i²= -7(-1)=7

So

(7i)(-i)= 7

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