LCM the last common multiple. the greatest common factor is the biggest number that will go into the 2 numbers so it can be no bigger than the 2 numbers. the LCM is larger than at least one of them
Answer:

Step-by-step explanation:
Let 
So 

Let 
We are going to find 
So we are evaluating 
First step find f(-2)
Second step find f'(-2)
Third step plug in those values and apply PEMDAS!


So

Answer:k=4.5
Step-by-step explanation:4.5/1.5=3
3a to the power of 2 plus 5a minus 2
16 because 40-12=28 and Samad will be 28 on 16 years. In 16 years his father will be 56 which is double of 28.