Offering 50

f(x) = 5x ^ 2 and g(x) = x + 1 find (fg)(x)

a 5x^3 +1
b 5x^4+5x^3
c 5x^4+1
d 6x^3

Step-by-step explanation:

Here, the given functions are:

Now, (fg)(x)  = f (g(x))

f(g(x))= f (x+1)

By ALGEBRAIC IDENTITY:

So,

Hence,

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb