Question 46412
{{{(16x^4yxy^3x^9x )}}}
{{{((16x^4)(x^9)(x)(x)(y^3)(y) )}}}  [Re-group like-terms together]
{{{((16x^(4+9+1+1)))(y^(3+1)))}}}  [When multiplying like-terms, add exponents]
{{{((16x^15))(y^4))}}} [Final answer]