Which expression simplify to 0?check all that apply 8g-8g
-2g- 2g
5g+(-5g)
1/2g+1/2g
-2/3g+2/3g

hrdgdgdgdfgfgg

Step-by-step explanation:

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.