-2x^4 + 10x^3 - 21x^2 + 19x - 4
that should be the right answer
#1:Proportional Medians Theorem
#2:BD/FH = CB/GF
#3: 24/16 27/x
So the first ratio is 3/2 because both are divisible by 8. the ratio stays 3/2. 3*9=27. so 2*9=18
x=18
#4: x = 8.5
#5: x = 68
Hope this helps!!
The answer is fourteen, I think. Because 14*14=196.
