Help me by please this is kinda hard for my child and I forgot it

I think it 6 but i need to see what it says to aually get it right

Step-by-step explanation:

dc=6 square root of 3 and ac is 12 square root 3

c and d

step-by-step explanation:

square root of 3/2 = 18/c

cross multiply to get 18*2=√3*c

36/√3 * √3/√3 = c

c= 36*√3/3

c=12√3

80x^8−68x^6+16^5−20x^4−4x^3+8x^2

hope i'm right lol