Math Question with Exponents...

[jay47]

What's up everyone, just needed a little help getting through this problem (little rusty on the old math skills) Write this down on paper and it should help...

2^(21) / [4^(4)* (4^(4) + 4^(5))]= ?

How does this reduce down to [2^(5)] / 5

?
Thanks

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[baedero1]

2^21/4^4*(4^4+4^5) = 2^21/4^4*4^4(1+4) = 2^21/2^8*2^8(1+4)

= 2^21/2^16(5) = 2^5/5