trishinada63 trishinada63

16-02-2018
Mathematics

contestada

The expression x(3i^2)^2 + 2xi^12 is equivalent to

1) 2x + 27xi
2) -7x
3) -25x
4) -29x

Respuesta :

jcherry99 jcherry99

19-02-2018

x ( 3i)^2 = x * 9 (i)^2 = 9x(-1) = - 9x

i^12 = (i^4)^3 = 1^3 = 1
2x(1) = 2x

-9x + 2x = - 7x

B <<<<==== Answer.

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