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If z = (3sqrt7 +4i)^2(3sqrt7-4i)^3 then ...

If `z = (3sqrt7 +4i)^2(3sqrt7-4i)^3` then ` Re(z) = `

A

1) `79xx3sqrt(7)`

B

2) `(79)^2(3sqrt(7))`

C

3) `-4(79)^2`

D

4) `79^2(3sqrt(7)-4i)`

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