Question 1090134

{{{6a^2-38ab+40b^2}}}

{{{2(3a^2-19ab+20b^2)}}}

{{{2(3a^2-15ab-4ab+20b^2)}}}

{{{2((3a^2-15ab)-(4ab-20b^2))}}}

{{{2(3a(a-5b)-4b(a-5b))}}}

{{{2(3a - 4b)(a -5b)}}}