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Mathematics 14 Online
OpenStudy (anonymous):

PLEASE HELP!

OpenStudy (anonymous):

Directrix (directrix):

Any idea?

Directrix (directrix):

b^3 times b^3 = b^6 a^2 times a^2 times a = a^5

Directrix (directrix):

So, a b^3 is coming out but has to be positive. The absolute values ensure that. a^2 is automatically non-negative. One a is left under the radical.

OpenStudy (anonymous):

I answered it but the answer I got is not in the choices, I got a^5/2 b^3

Directrix (directrix):

This is a square root problem, right?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

Thank you!!!

OpenStudy (anonymous):

these problems are so confusing :(

Directrix (directrix):

Yes, they are.

OpenStudy (anonymous):

I am taking them from a study guide and exercising, the ones I don't know how to do I am posting them here. so let me see :) hahah thanks a lot!

Directrix (directrix):

Alrighty, then.

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