Question

Please help..! Very stuck! 100 points!

I've done it in three different ways and I'm not quite sure which one it is.


Refer to Expression 1:

Expression 1

6·5 - 2²·(8+3³)

(a) What is the value of Expression 1?

Answer 1

-110

Explanation:

6·5 - 2²·(8+3³)

Work on index inside the brackets

6·5 - 2²·(8+27)

Now, work on the brackets

6·5 - 2²·(35)

works on another index

6·5 - 4·35

. means multiplication

The order of operation is BIDMAS

multiply/divide before add/subtract

30 - 140 = -110