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22 February, 09:25

Find the missing term

The sum of - 3x^2 or 3x^2 and 7x^2 is 10x^2

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Answers (1)
  1. 22 February, 12:20
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    Step-by-step explanation:

    "The sum of - 3x^2 or 3x^2 and 7x^2 is 10x^2" is false as it now stands.

    If we combine - 3x^2 and 3x^2, we get 0, so:

    "The sum of - 3x^2 or 3x^2 and 7x^2 is 10x^2" is equivalent to

    "The sum of (expression) and 7x^2 is 10x^2".

    Subtracting 7x^2 from both sides yields (expression) = 3x^2.

    So: Although "The sum of - 3x^2 or 3x^2 and 7x^2 is 10x^2" is false,

    "The sum of 3x^2 and 7x^2 is 10x^2" is true, and the formerly missing term is 3x^2.
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