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7 May, 01:57

Find (2x^2-4) - (5x^2+2) + (7x^2-5)

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  1. 7 May, 02:25
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    (2x² - 4) - (5x² + 2) + (7x² - 5) = (2x² - 4 - 5x² - 2 + 7x² - 5)

    = (2x² - 5x² + 7x² - 4 - 2 - 5)

    = 4x² - 11
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