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Emily simplified this expression. Expression: (5−2)2+23×4 Step 1: (3)2+23×4 Step 2: 9+23×4 Step 3: 9+9×4 Step 4: 9+36 Step 5: 45 Emily made a mistake. Which step shows her first mistake? Step 1 Step 2 Step 3 Step 4

Respuesta :

Given:

The expression is

[tex](5-2)^2+2^3\times 4[/tex]

Emily simplified this expression and steps are given.

To find:

The first mistake of Emily.

Solution:

We have,

[tex](5-2)^2+2^3\times 4[/tex]

Step 1: [tex](3)^2+2^3\times 4[/tex]

Step 2: [tex]9+2^3\times 4[/tex]

Step 3: [tex]9+8\times 4[/tex]

Step 4: [tex]9+32[/tex]

Step 5: [tex]41[/tex]

So, she made a mistake in her third step.

Therefore, the correct option is C.