## Description

first exercises 4+2[9+(-4+12)] second exercises 2^2-[3+9] third exercises 5^2-[10+(8)]

## Explanation & Answer

4+2[9+(-4+12)] = 4 + 2[ 9 + 8 ] Do innermost brackets first

= 4 + 2 * (17) remaining brackets are calculated

= 4 + 34 multiplication before addition

= 38

second exercise 2^2- [3+9]

= 4 - 12 Do power and brackets

= -8

third exercises 5^2-[10+(8)] is like the second exercise

= 25 - 18 (Is it meant to be 8 or -8? if -8 then it would be 2 here)

=7

### Review

### Review

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