# 243 = a^3

• October 16th 2013, 09:22 AM
parmis
243 = a^3
243 = a^3

what the answer? (Doh)
• October 16th 2013, 11:41 AM
ebaines
Re: 243 = a^3
Take the cube root of each side:

$243=a^3$
$243^{1/3} = (a^3)^{1/3} = a$
• October 16th 2013, 11:48 AM
HallsofIvy
Re: 243 = a^3
If the question is "what is a" then the answer is obviously $a= 243^{1/3}$. Now, you might, if you are required to, find the prime factors (start by dividing by 3) and simplify that. Since you made no attempt yourself, it is impossible to determine what you want to do or what you have been asked to do.

( But $3^3= 27$, NOT 243!!)