What's Wrong? Q9b

24 comments:

  1. he missed one step in the equation

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  2. In the 1st step he should expand the value in the brackets before multiplying it by 3.

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  3. he is supposed to use foil method not multiply the first of each bracket and the last of each bracket.

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  4. he skip a step, and somehow got 36a^2 + 9

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  5. It's not "he", it's "she". Cuz I did it. :P
    and... I still dk whr I went wrong. :X

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  6. He did not used the Foil method well enough as he missed out the step of taking 6aX3

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  7. She did the foil method wrongly..

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  8. he must do the ^2 before multiplying it

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  9. The person was careless and missed a step in the step before that

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  10. He should do The ^2 first before the multiplication and not the other way

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  11. Six did not did the equation properly, and missed a step?

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  12. Fine she. She missed a step doing the second number. The erm +2ab part...

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  13. He did not expand the expressions correctly. It should have been -(36a^2 - 6a+ 6a+ 9) which is -36a^2-12a-9. He probably thought that it was 6a x 6a and 3 x 3 and he got 36a^2 and 9. I think he did not draw the arrows foil method and forgot the steps.

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  14. (S)he forgot to apply the FOIL method to (6a +3)(6a +3)

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  15. She must do the ^2 in the first step before multiplying.

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  16. This comment has been removed by the author.

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  17. He/She did not do the Foil method properly

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  18. She forgot was careless. When (6a+3)(6a+3) the answer is actually supposed to be 36a^2+18a+9

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  19. This has been done wrongly the student could have done foil where the circle was at

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  20. She should use the foil method instead.

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