U have to add all the percentages up which would add up to 1
Number 17 is A and18 is F
You have to use this equation the a=5, h=4 and b=9 and you should get the answer of 28
I got:
by multiplying each factor....
x^4 - 2x^3 - 2x^2 + 2x^3 - 4x^2 - 4x + 3x^3 - 6x - 6
then combining like terms....
answer is:
x^6 - 3x^2 - 10x - 6