3^2+3+45

To evaluate the expression 3^2 + 3 + 45, you need to follow the order of operations, known as PEMDAS.

First, you need to perform any calculations within parentheses. In this case, there are no parentheses.

Next, you need to evaluate any exponents. In this case, 3^2 means 3 raised to the power of 2, which is 9.

After that, you can perform any multiplication or division from left to right. In this case, there are no multiplication or division operations.

Finally, you can perform any addition or subtraction from left to right. In this case, you need to add 9 (from 3^2) plus 3 plus 45.

9 + 3 + 45 = 57

So, the value of the expression 3^2 + 3 + 45 is 57.