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Jillian simplified the expression
7+3 . (10 – 6)2 in the following way: 7+3 . (10 – 6)? 2. 7+3. (4) 7 + 3.16 10 - 16 160

A: Explain, using complete sentences, what Jillian's error was.

Part B: Show how the expression should have been simplified using a similar format.​

Respuesta :

Error in step  [tex]10 \cdot 16[/tex]  (3 times 16 should be multiplied first )

Steps to simplify

[tex]7+3 \cdot (10-6)^2\\7+3 \cdot (4)^2\\7+3 \cdot 16\\7 \cdot 48\\ 55[/tex]

Given :

Jillian simplified the expression [tex]7+3 \cdot (10-6)^2[/tex]

Steps :

[tex]7+3 \cdot (10-6)^2\\7+3 \cdot (4)^2\\7+3 \cdot 16\\10 \cdot 16\\160[/tex]

Explanation

Lets analyze step by step to find out the error.

Use order of operation PEMDAS

Start with parenthesis , exponents , multiply and divide , add and subtract

Jillian simplified the parenthesis first

Second step is correct

Next  exponent is simplified

In the fourth step , 7 and 3 are added before multiplication

10 times 16 is not correct

As per PEMDAS, we need to multiply first and then add 7

Error is step [tex]10 \cdot 16[/tex]

[tex]7+3 \cdot 16\\7+ 48\\Add \; 7\\55[/tex]

Learn more :  brainly.in/question/4148085

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