Question 6174
{{{3xy^2(r+3s)-6y^2(r+3s)}}}
Use the distributive property {{{a(b+c)=ab+ac}}} and you get:
{{{3xy^2r+9xy^2s-6y^2r-18y^2s}}} since there are no like terms to combine this is your final answer.
When using {{{-6xy^2}}} we come up with the follwing answer:
{{{3xy^2(r+3s)-6xy^2(r+3s)}}} use distributive property
{{{3xy^2r+9xy^2s-6xy^2r-18xy^2s}}} Combine like terms and you get
{{{-3xy^2r-12xy^2s}}} which is your final answer
Hope it helps