Question 466486
{{{5x^7y^5+30x^5y^4+35xy}}}

step 1
look for factor in co-efficients in all three terms
5 is common
For variable x 
look for the smallest index of x
it is x in the third term
look for the factor in y with smallest index
y is the smallest in third
so your factor is 5xy
{{{5xy(x^6y^4+6x^4y^3+7)}}}