Question 77833

45x^4y^2 - 75x^3y + 30 xy^4

The numbers are 45, 75 and 30

Their GCF = 15

The GCF of the variables will be the variable with the lowest power/exponent

GCF of x^4 y^2,  x^3 y,   xy^4 = xy

So 45x^4y^2 - 75x^3y + 30 xy^4

= 15xy (3x^3y - 5x^2 + 2y^3)


Good Luck!