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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 :

MrRoyal

Answer:

Step 3

Step-by-step explanation:

Given

[tex](5 - 2)^ 2 + 23 * 4[/tex]

Required:

Determine the first step where she made mistake

Her Step 1:

[tex](3)^ 2 + 23 * 4[/tex] --- This is correct because she solved the bracket first

Her Step 2:

[tex]9 + 23 * 4[/tex] --- This is correct because she solved 3^2 as 9

Her Step 3:

[tex]9 + 9 * 4[/tex] --- This is incorrect because 23 * 4 is not equivalent to 9 * 4

Hence, her first mistake is in step 3.

The correct expression would have been

[tex]9 + 92[/tex]

Then

[tex]= 101[/tex]

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