Find the radius and the center (x+3)2 + (y+8)2 = 81

This means the center is (-3,-8) and the radius is 9

Step-by-step explanation:

(x+3)^2 + (y+8)^2 = 81

The equation of a circle can be written as

(x-h)^2 + (y-k)^2 = r^2  where the center is (h,k) and the radius is r

We can rewrite the above equation as

(x- -3)^2 + (y - -8)^2 = 9^2

This means the center is (-3,-8) and the radius is 9

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10