Find the greatest Common factor for the list of terms

Question

-X^9, -3x^5, -6x^7

WOULD THE ANSWER BE x?????

Answer 1

Pick the gcd of the coefficients: 3,6 = 3
The gcd of the powers is the lowest power: x^5

So, the gcd of the three terms is 3x^5.

No larger integer or higher power of x will divide all 3.