Posted by Nick on Sunday, November 22, 2009 at 12:18pm.
Hi my class is doing a unit on patterns with algebraic expressions. And i need to find a difficult expression
Figure# Term value
1 8
2 27
3 64
4 125
what is the algebraic expression and how did u do it? thank you.
MathNick

8th grade math  PsyDAG, Sunday, November 22, 2009 at 12:29pm
It looks like a progression from 25, with each number being cubed.
2^3 = 2 * 2 * 2 = 8
If you let n stand for the number in your first column, then these would be the algebraic expressions.
(n + 1)^3 = 8
(n + 1)^3 = 27
And so on.
I hope this helps.