Answer
The answer is $3x^{2}$ + $x$ - $2$.
Work Step by Step
For (x+1), you will need 1 “x” block and 1 small yellow block and for (3x-2), you will need 3 “x” blocks and 2 small red blocks. Next, you multiply these two expressions and it results in $3x^{2}$ + $x$ - $2$.
