Tuesday, 24 February 2015

Real Numbers - 4 operations: What's Wrong? (2)


8 comments:

  1. the question asked for square root but he cubes root it so he is wrong

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  2. He cancelled the index notation when he was not supposed to.

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  3. In line 1, you should not cross out the notations '3' because it can not be square rooted.

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  4. he cannot cross the powers as it is square rootnot cube

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  5. You cannot cross out the index notation like this.

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  6. do not cross out powers BECAUSE they are POWERFUL

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