Question

Evaluate the expression: 20 - 2^4

Answer 1

Answer:

4

Step-by-step explanation:

20 - 2^4

The first thing to do is the exponents,

2^4 = (2 x 2) x 2 x 2 = (4 x 2) x 2 = 8 x 2 = 16

OR

2^4 = 4^2 = 16

SO

20 - 2^4 = 20 - 16

Then do the subtraction

20 - 16 = 4

SO

Your answer is 4