Question

2. Rohan solved the following question given by his teacher. The numbers written in the boxes were by Rohan.

(i) State whether Rohan has answered correct in all the boxes. Point the wrong answer.

(ii) If you find any answer incorrect rewrite this activity with correct answer.​

Answer 1

Answer:

I),= 9+&+-"+*+£('(*£("7"7£7:7_7__

Answer 2

Given :  √3  *  3√3  = 9    +  √3  = 9√3  - 2√3  = 7√3

The numbers written in the bold were by Rohan.

To Find : State whether Rohan has answered correct in all  

rewrite this activity with correct answer.​

Solution:

√3  *  3√3  = 9    +  √3  = 9√3  - 2√3  = 7√3

√3  *  3√3  = = 3 * √3  * √3     = 3 * 3 =  9

9 is written correctly

9 + √3  = 9  + √3  ≠  9√3

Hence 9√3 not written correctly

9√3 - 2√3  = 7√3  is correct  but as 9√3  itself was wrong hence not correct

correct would be

9 + √3 - 2√3 = 9 - √3

Correct Activity would have been

√3  *  3√3  = 9    +  √3  = 9 + √3  - 2√3  = 9 - √3

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