Question 610005
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Hi, The Idea is to factor out what the two terms have IN COMMMON...
 {{{4x^2+6xy = 2x(2x+3y)}}}    ||NOTE: 2x·2x = 4x^2
{{{18y^2 + 6yz = 6y(3y+z)}}}
  2x +2y = 2(x+y)
{{{15a^2b^2-5ab = 5ab(3ab-1)}}}
   5xy-12x = x(5y-12)