Write an equivalent expression using radical notation and, if possible, simplify
81^(3/2)
Thanks
2007-08-26 10:52:56 · 4 answers · asked by Anonymous in Education & Reference ➔ Homework Help
81^(3/2)
= [sqrt(81)]^3
= [sqrt(81)]^2 sqrt(81)
= 81sqrt(81)
= 81 * 9
= 729.
2007-08-26 11:01:41 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Im not sure if this is radical notation but another way to write that would be the square root of 81 to the third power. the final answer being 729. Again i am not sure if this is radical notation...
2007-08-26 18:03:33 · answer #2 · answered by s g 1 · 1⤊ 0⤋
It's the square root of 81 cubed. [81^(1/2)]^3 or (â81)^3.
In case you didn't know, x^(1/2)=âx.
The whole thing should come out to 729.
2007-08-26 18:08:26 · answer #3 · answered by thered0390 1 · 0⤊ 0⤋
(sqrt(81)) ^ 3
= 9 ^ 3
= 729
2007-08-26 18:01:38 · answer #4 · answered by norman 7 · 1⤊ 0⤋