Question 140126
{{{(X^(n-4)Y)^3(X^6Y^(n+4))^2 }}}
;
Multiply all exponents inside the brackets by the exponent outside the brackets
{{{(X^(3(n-4))Y^3)*(X^12Y^(2(n+4)))}}}
:
{{{(X^(3n-12)Y^3)*(X^12Y^(2n+8))}}}
:
When you multiply like terms, add the exponents
{{{(X^(3n-12+12)Y^(3+2n+8))}}}
:
{{{(X^(3n)Y^(2n+11))}}}