Question 65634
Hi! I need some help to simplify and all exponents should be positive.

(2^-1a^2b)^-3
------------
4a^-9
{{{(2^(-1)*a^2*b)^(-3)/(4a^(-9))}}}
{{{2^(-1(-3))*a^(2(-3))*b^(-3)/(4a^(-9))}}}
{{{2^3*a^(-6)*b^(-3)/(2^2*a^(-9))}}}
{{{2^(3-2)*a^(-6-(-9))/b^3}}}
{{{highlight(2a^3/b^3)}}}


and

(3x4y^3-5y)-(2x+3y^3-5y)
There's something missing between the x and the 4 in the first set of parentheses.  Let me know what it is, and I'll edit this.
Happy Calculating!!!