Your question the way it stands makes no sense, but it looks like
you are finding the value when x = 3
so the result is correct so far,
you just have to simplify it.
Can someone check my work
I have to find the value of x^3 + 2x^2 - 3
My answer: 27 + 18 - 3
2 answers
So my final answer would be: 42?