Hey there!
To start, whenever you are performing (f+g)(x), this means that you are to add the functions f(x) and g(x) together.
In this case, f(x) is equal to 5x^3-2 and g(x) is equal to 2x+1.
Because you are adding the two expressions as according (f+g)(x), you should set up this expression:
(5x^3-2)(2x+1)
Now, combine your like terms (terms of the same variables that are all raised to the same power):
(5x^3-2)(2x+1)
=5x^3+2x-1
Therefore, (f+g)(x)=5x^3+2x-1
Hope this helps and I hope you have a marvelous day! :)
Answer:
The possible original values of both products are ₹2 or ₹1
Step-by-step explanation:
The question is a word problem leading to simultaneous equations
Let 'x' represent the initial value of the pen and pencil
Therefore;
The final cost of the pen = x + ₹4
The final cost of the pencil = 5·x - ₹6
x + ₹4 > 5·x - ₹6
∴ ₹4 + ₹6 > 5·x - x
₹10 > 4x
₹10/4 > x
₹2.5 > x
Given that x is a natural number, therefore
x ≤ ₹2
The possible original values of both products are ₹2 or ₹1
Come on this is really easy..500