There's no "s" in your expression, so there's also no "f(x)."
To help you, I need to know that the instructions for this problem are.
Did you want to expand f(t) = t(e^t + e^(2t)^2?
f(t) = t * e^t + e^(2t) + 2e^(3t) + e^(4t)
If this is not what you wanted, then please go back to ensure that you have copied ALL of the problem statement to Brainly.
