## anonymous one year ago My last question, any help?

1. anonymous

How do you solve this?

2. Michele_Laino

hint: by definition, we can write this: $\Large \left( {g \circ f} \right)\left( x \right) = g\left( {f\left( x \right)} \right)$

3. anonymous

Just taking a wild guess here, but would that make the answer D?

4. anonymous

It is not.

5. anonymous

$If f(x)=3x^2-2x-1$ and $g(x)=x^2$ Since (x) in g(x) got replaced by a f(x) and $f(x)=3x^2-2x-1$

6. anonymous

then $3x^2-2x-1$ would replaced the x in $g(x)=x^2$

7. anonymous

which leads to $(3x^2-2x-1)^2$ g o f means g has a f inside that leads to g(f(x)) meaning the g(x) needs to be plugged in with f(x) instead.