Question

How do you evaluate `(2\times 5^ { 2} - 8)`?

Answer 1

See a solution process below:

Explanation:

Using the PEDMAS order of operation we first execute the operations for Exponents giving:

`(2 xx 5^color(red)(2) - 8) => (2 xx 25 - 8)`

Next, we execute the Multiplication operation giving:

`(color(red)(2) xx color(red)(25) - 8) => (50 - 8)`

Now we can execute the Subtraction operation giving:

`(50 - 8) => 42`