What additional information must be known to prove the triangles similar to SAS?

I think C

Step-by-step explanation:

Option A) is the right answer because for SAS property we need to verify that the sides are equal to each other in the triangles.

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3