Which expression of the gcf of the terms of the polynomial 16x^3+28x^5y

1. Determine the prime factorization of 60. 
a.2 • 3^2 • 5 
b.2^2 • 3 • 5 
c.3^2 • 7 
d.2^3 • 7 

2. Find the GCF of the terms of the polynomial. 16x^3 + 28x^5y 
a.112x^5y 
b.4x^5y 
c.4x^3 
d.8x^5 

3. Simplify. 12n^2m^4/24^4m^3 
a.3n^2/7m 
b.3n^2/m 
c.3m/7n^2 
d.3n^6m^7/7 

4. Divide. (3a^3 + 6a^2) ÷ 3a 
3a^3 + 6a^2 − 3a 
3a^3 + 6a^2 + 3a 
a^2 + 2a 
a^2 + 6a^2 

X^2 - 4x +(4/2^2) + y^2 + 8y + (8/2^2) = -4 + (4/2^2) + (8/2^2)(x + 2)^2 + (y + 4)^2 = -4 + 4 + 16your center is (-2, -4) and the radius is the sqrt of -4 + 4 + 16 which is 4

The variables should add up to equal 1