Answer:
g(x) = (x + 5)²
Step-by-step explanation:
g is the same function f shifted 5 units to the left.
Then, if we have a function h(x) =f(x+c), h(x) is f(x) shifted c units to the left.
So, to translate f 5 units to the left, we need to replace x by (x + 5), to get:

So, the equation for g(x) is:
g(x) = (x + 5)²