Question

Consider the expression 9 + 3 x 2^2 - 1 x 4.

Answer 1

To evaluate the expression 9 + 3 x 2^2 - 1 x 4, you should follow the order of operations (PEMDAS/BODMAS).

First, perform the exponentiation:

2^2 = 4.

Now, perform the multiplication:

3 x 4 = 12.

Next, perform the multiplication:

1 x 4 = 4.

Now, perform the addition and subtraction from left to right:

9 + 12 - 4 = 21.

So, the value of the expression 9 + 3 x 2^2 - 1 x 4 is 21.