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18 November, 19:47

Expand and simplify (x-3) (x+7)

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  1. 18 November, 19:54
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    Let's multiply each term for the other one.

    I mean: x*x; x+7; - 3*x; - 3*7

    So x²+7x-3x-21

    We add up like terms.

    Final answer: x²+4x-21
  2. 18 November, 20:12
    0
    X (x+7) - 3 (x+7)

    x² + 7x - 3x - 21

    x² + 4x - 21

    that's the answer

    if you understand and it's correct. don't forget to make my answer the brainliest
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