Question 54002
{{{-2a(a^2b^2+ab-4)}}}
{{{-2a(a^2b^2)-2a(ab)-2a(-4)}}}
{{{-2a^(1+2)b^2-2a^(1+1)b-2(-4)a}}}
{{{-2a^3b^2-2a^2b+8a}}}
Let me know what needs more explanation.
Happy Calculating!!!