<PRE><B>Question 120607</B>
Presumably you want to simplify thse expressions! ??
Simplify:
{{{5w^2y*(-3)w^8y^9}}} Group the like factors together. 
{{{5(-3)*(w^2*w^8)*(y*y^9)}}} Multiply the integers (5) and (-3)
{{{-15*(w^2*w^8)*(y*y^9)}}} Now, for the factors of the same variable, add their exponents.
{{{-15*w^((2+8))*y^((1+9))}}} = {{{-15*w^10*y^10}}}
Simplify:
{{{(900y^2)^0}}}
Anything raised to the zero power equals 1.
{{{(900y^2)^0 = 1}}} </PRE>