Question

Let f(x) = x^2 and g(x) = x - 5 Find (f o g)(-2)

Answer 1

`Solution,\\f(x) = x^(2)\\g(x) = x-5\\Now, \\fog(x) = f[g(x)] = f(x-5) = (x-5)^(2) \\Put~x=-2,\\fog(-2) = (-2-5)^(2) = (-7)^(2) = 49`