Question

10th standard math sum
exercise 1.5 4) If f( x)=x2 -1 , g(x)= x2​

Answer 1

Answer:

g(f(x)) first. Then we can plug in x = -5

g(x) = x^2

g(f(x)) = (f(x))^2

g(f(x)) = (x+2)^2

(g o f)(x) = (x+2)^2

(g o f)(-5) = (-5+2)^2

(g o f)(-5) = (3)^2

(g o f)(-5) = 9