Question

Huda evaluated the expression below.


What was Huda’s error?

Answer 1

Huda found the product of
`-3` and
`9` as positive
`27`.

Explanation:

We have been given an image, which shows Huda's work of evaluating an expression. We are asked to find Huda's error.

The given expression is:
`-3(8-5)^2-(-7)`.

We will evaluate our given expression using order of operations PEMDAS.

`-3(3)^2-(-7)`

`-3(9)+7`

`-27+7`

`-20`

We can see from Huda's work that he found the product of negative 3 and 9 as positive 27, therefore, Huda made a mistake in 3rd step.

Answer 2

(-3 multiplied by 9 equals -27 and Huda has set 27)

Explanation:

we have

`-3(8-5)^(2)-(-7)`

`-3(3)^(2)-(-7)`

`-3(9)-(-7)`

`-27-(-7)` -----> Huda's error (-3 multiplied by 9 equals -27 and Huda has set 27)

`-27+7`

`-20`