posted by cathy on .
Simplify 3x to the 4th times yto the 5th over9xy toto the7th all in parenthesis
(3x)^4 y^5 / (9xy)^7
3^4 x^4 y^5 / 9^7 x^7 y^7
3^4 = 9^2
1 / (9^5 x^3 y^2)
If I got the parens wrong, fix em and show what you get.
Use ^ for powers, and lose all the words. Use () for parens, so we know just what you mean.