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Matteolabar
@Matteolabar
April 2019
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A=-2n(n-3)+3(n*-5n)-(n*-4n+1)
il faut développer et réduire merci
les Astérix "*" sont des au carré
merci
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Jeremy26i
Bonjour
Matteo,
A = -2n(n-3) + 3(n²-5n)-(n²-4n+1)
= -2n² + 6n + 3n² - 15n - n² - 4n + 1
= -13n + 7
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A = -2n(n-3) + 3(n²-5n)-(n²-4n+1)
= -2n² + 6n + 3n² - 15n - n² - 4n + 1
= -13n + 7