Question 88208
The GCF is the largest factor that divides into both terms in this expression{{{-24x^4y^3+30x^2y^3}}}. If variables are involved, it will be the LOWEST power of each variable.  This would be {{{6x^2y^3}}}.  


When you take out the NEGATIVE of this common factor, it changes all the signs.  What is left is this:
{{{-6x^2y^3(4x^2 - 5)}}}


R^2