Question

What is the value of x^3 + 3x^2 + 2x, when x is equal to 3?

Answer 1

That would be 3^3 + 3*(3)^2 + 2(3) which is 27 + 27 + 6.

That equals 60.

Answer 2

You need to plug in 3 to x. so the new equation would look like this:\[(3)^3 + 3(3)^2 + 2(3)\] then, you would simplify that into this:\[27 + 27 + 6\] Now remember PEMDAS (parenthesis, exponents, multiplication, division, addition, subtraction). You must to 3^2 before you multiply that 3 in the middle. So your answer is 60. Does that make sense? Do you have any questions about the process?