combining functions: find f(g(0)) for f(x)=x^3-5, and g(x)= 2-x^2

[Illvoices]

so ive got the functions f and g and i have to solve for question 21.
21-26 ■ use function f(x)=x3-5, and g(x)= 2-x² to evaluate the expression.
21. a) f(g(0))

can anyone tell me how'd they get 1 as an answer for this question i guess what i'm trying to say is where did the squared x go?

 

[Harry_the_cat]

so ive got the functions f and g and i have to solve for question 21.
21-26 ■ use function f(x)=x3-5, and g(x)= 2-x² to evaluate the expression.
21. a) f(g(0))

can anyone tell me how'd they get 1 as an answer for this question i guess what i'm trying to say is where did the squared x go?

Work from the inside bracket outwards: f(g(0)) = f(2) .... since g(0)=2=0^2=2. Now work out f(2).

 

[stapel]

so ive got the functions f and g and i have to solve for question 21.
21-26 ■ use function f(x)=x3-5, and g(x)= 2-x² to evaluate the expression.
21. a) f(g(0))

can anyone tell me how'd they get 1 as an answer for this question i guess what i'm trying to say is where did the squared x go?

Please reply showing your work, so we can see what is generating your question. Thank you! ;-)