What's Wrong? Q19 (Type 3)

Describe what's wrong with the working and/or answer.
Suggest how it should look like.


2 comments:

  1. For the first line it should be -v^2.

    25-(u-v)^2
    =25-(u^2-2uv+v^2)
    =25-u^2+2uv-v^2

    And plus you can't just factorise the u ad v like that by bracketing it and taking out the indice.

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  2. The answer is similar to the question. You need to factorize more. It should be (5+u-v)(5-n+v)

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