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23 April, 09:51

Which of the following is the correct expansion of (x - 2) (x - 5) ?

x2 + 7x + 10

x2 + 7x - 10

x2 - 7x - 10

x2 - 7x + 10

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  1. 23 April, 10:17
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    Use distributive property:

    (a + b) (c + d) = ac + ad + bc + bd

    (x - 2) (x - 5) = (x) (x) + (x) (-5) + (-2) (x) + (-2) (-5) = x² - 5x - 2x + 10

    Answer: (x - 2) (x - 5) = x² - 7x + 10
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