SOLUTION: I need help with this question I got it wrong: Find the GCF of the set of monomials. 15x2y3, 15xy3, 18x2y2z3 I put the answer 3xxxy to the second. We use webassign in our clas

Question 273767: I need help with this question I got it wrong:
Find the GCF of the set of monomials.
15x2y3, 15xy3, 18x2y2z3 I put the answer 3xxxy to the second. We use webassign in our class and it doesn't recognize this symbol^ so we have to exchange this symbol^ for a number thanks
Answer by jsmallt9(3758) (Show Source): You can put this solution on YOUR website!
Until you get good at "seeing" GCF's it helps to look at each term in fully factored form:

15x2y3   = 3 * 5         * x * x * y * y * y
15xy3    = 3 * 5         * x     * y * y * y
18x2y2z3 = 3     * 3 * 2 * x * x * y * y     * z * z * z

I have used spacing to make it is easier to see all the factors which are in all three terms. We can see that there is one 3, one x and two y's in all three terms. So the GCF = 3*x*y*y =
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