Question

23) If f(x) = 5x - 4x +3,
Find: f(1) + f(-1) + f(2) + f(-2)​

Answer 1

Answer:

f(1)+f(-1)+f(2)+f(-2)=12

Step-by-step explanation:

f(x)= 5x-4x+3

f(1)= 5(1)-4(1)+3 =4

f(-1)= 5(-1)-4(-1)+3=2

f(2)= 5(2)-4(2)+3= 5

f(-2)= 5(-2)-4(-2)+3=1

f(1)+f(-1)+f(2)+f(-2)=4+2+5+1=12