Question 861079
{{{-2a^2b^3(-3a^3y^2b^3)^4=-2a^2b^3(-3)^4(a^3)^4(y^2)^4(b^3)^4=-2*a^2*b^3*81*a^(3*4)*y^(2*4)*b^(3*4)}}}
={{{-2*a^2*b^3*81*a^12*y^8*b^12=-2*81*a^2*a^12*b^3*b^12*y^8=-162*a^(2+12)*b^(3+12)*y^8=-162a^14b^15y^8}}}