Answer:

Step-by-step explanation:
we know that
A quadratic function in factored form is equal to

where
a is the leading coefficient
x_1 and x_2 are the zeroes of the function
substitute the given values

Find the value of a
Remember that
For x=0 ----> f(0)=4
substitute


so




Answer:
-4
Step-by-step explanation:
Factors of 75 and 100
75=1,3,5,15,25
100=1,2,4,5,10,20,25
25 is your greatest common factor
5cm is the answer your looking for
15. true 16. false in my coculations.