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sequoyahcyrus
@sequoyahcyrus
January 2021
2
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Bonsoir tout le monde alors voilà:
(2a + 5)(6a + 4) Développer cette opération.
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nonotata
Bonsoir
(2a + 5)(6a + 4)
2a*6a +2a*4 +5*6a+5*4
12a²+8a+30a+20
12a²+38a+20
0 votes
Thanks 1
sequoyahcyrus
Merci
PAU64
(2a + 5) (6a + 4)
= 2a * 6a + 2a * 4 + 5 * 6a + 5 * 4
= 12a² + 8a + 30a + 20
= 12a² + 38a + 20
2 votes
Thanks 1
PAU64
les * désignent "fois"
sequoyahcyrus
merci bcp je sais. :)
PAU64
d'accord mais c'était au cas où ;)
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(2a + 5)(6a + 4)
2a*6a +2a*4 +5*6a+5*4
12a²+8a+30a+20
12a²+38a+20
= 2a * 6a + 2a * 4 + 5 * 6a + 5 * 4
= 12a² + 8a + 30a + 20
= 12a² + 38a + 20