Answer:Please see explanation for answer.
Step-by-step explanation:
Simplifying the expression
5 + 4) 2− 5 × 2
Carl's method
(5 + 4) 2− 5 × 2 -----first error was taking only 4 from the bracket and squaring it.
Instead of solving the bracket as a whole before solving outside. And once she got it wrong from the start, every other solving would be wrong
(5 + 16) − 5 × 2
21 − 5 × 2
16 × 2
32
The right method
In simplifying the expression, we must bring in Mind our Bodmas
Which means we tackle Brackets before division, then multiplication , then addition and lastly subtraction.
(5 + 4) 2− 5 × 2
Solving the bracket first we have
(9)2-5x2
Since there is no division, we move to multiplication and we can see two sites for multiplication(9 x 2 and 5x2)
18-10
Subtracting will give us 8 as our answer.
