Answer:
It'd descend 25ft per second
Step-by-step explanation:
500 divided by 20
For these kinds of expressions use FOIL (first, outside, inside, last).
-2x • 9x = -18x^2
-2x • -3y = 6xy
8y • 9x = 72 xy
8y • -3y = -24y^2
Now combine them all:
-18x^2 + 78xy - 24y^2
To find the zeros of a polynomial, you make every factored parentheses equal to zero. You basically make the other side equal to zero and solve for x.
So,
<u>Your zeros are x = 9, -12, 24</u>
So your answer is 3) 9, -12, 24