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Sagot :

Hello

Point méthode : (a + b)(c + d) = ac + aad + bc + bd

(-9x + 6)(x + 4) = -9x * x - 9x * 4 + 6 * x + 6 * 4 = -9x² - 36x + 6x + 24 = -9x² - 30x + 24.

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