What are the solutions to (x+7)2 = 81? A. -74 and 88

B. -2 and 16

C. -88 and 74

D. -16 and 2

D

Step-by-step explanation:

x+7 =√81: x=s

x+7=-√81: x=-16

step-by-step explanation:

given that ab is divided into equal parts as

ac, cd, de, ef, fg, gh, hi, ib.

from this we find that f is the midpoint of ab.

so using mid point formula we find

f = (3,7)

similarly considering fb, we get

h = mid point of fb = ((6,6) and g, mid point of fh is

g = (9/2, 13/2)

i is mid point of hb

so i =(15/2,11/2)