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The equation whose roots are sqrt(2),-sq...

The equation whose roots are `sqrt(2),-sqrt(2),3i,-3i` is

A

`x^(4)+7x^(2)-18=0,`

B

`x^(4)-7x^(2)+18=0`

C

`x^(4)+7x^(2)+18=0`

D

`x^(4)-7x^(2)-18=0`

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