Question

If f(x) = -x - 2 and g(x) = x2, what is (g º f)(-6)?

HELP PLEASE?!

Answer 1

g of f (-6) = g(f(-6))
Solve for f(-6) first, then take the answer from that, and plug it in for x in g(x)

Answer 2

what does f equal and g ?? im confused

Answer 3

Look here:
\[f(x) = -x - 2\]
\[g(x) = x^2\]
\[(g ºf)(-6) = g(f(-6))\]
\[f(-6) = -(-6) -2 \]
Solve and whatever value you get for f(-6), plug in for x in the equation of g(x), and solve. That's your answer

Answer 4

thank you for helping. i dont understand it still

Answer 5

Maybe this will help: http://www.mathsisfun.com/sets/functions-composition.html