Question

if f(x)=5x²-4x+3.find f(1)+f(-1)+f(2)+f(-2)​

Answer 1

Answer:

f(1)=5(1)²-4(1)+3

5-4+3

4

f(-1)=5(-1)²-4(-1)+3

5+4+3

12

f(2)=5(2)²-4(2)+3

20-8+3

15

f(-2)=5(-2)²-4(-2)+3

20+8+3

31

f(1)+f(-1)+f(2)+f(-2)

4+12+15+31

=62

Step-by-step explanation:

hope it helps you.

Answer 2

Answer:

f(1)=4

f(-1)= 12

f(2)=15

f(-2)=31

sum=62