Thursday
August 28, 2014

Homework Help: Math HELP!! FAST!!

Posted by Namine on Friday, April 27, 2007 at 7:41pm.

Can someone help me solve this and write the answer in simplified radical form?

(z - 5)^3 + 32 = 0

Oh, solve for "z"... obviously.

.
.
z-5 = (-32)^(1/3)
z-5 = 8^1/3) (-4)^(1/3)
z = 5 - 2(4)^(1/3) or 5 - 2cuberoot(4)

Thanks!!!

But one other question, it's just 5 - 2 cuberoot(4)? That's the only answer? Or is it 5 - 2 cube(4) AND 5 + 2 cube(4)??? Sorry... just paranoid here.

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