Question

evaluate each of the following functions
1. f(x) = x² + 2x +3, find f(1)
2. f(x) = x-4, find f(-2)
3. f(x) = x² + 2x +3, find f (1)
4. f(x) = x + 5, find f(x+3) ​

Answer 1

Answer:

1. f(x)= x²+2x+3

=> f(1)= 1²+2.(1)+3= 1+2+3=6 Ans.

2. f(x)= x-4

f(-2)= -2-4= -6 Ans.

3. f(x)= x²+2x+3

=> f(1)= 1²+2.(1)+3= 1+2+3=6 Ans.

4. f(x) = x+5

f(x+3)= x+3+5 = x+8 Ans.