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Blakesenga
@Blakesenga
April 2019
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Calculer la valeur de l'expression 2x²
-3× pour ×=4 et ×=-3
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winner123
Verified answer
Bonsoir
2x²-3× pour ×=4 et ×=-3
pour x = 4, on a : 32 - 12 =
20
pour x = -3, on a : 18 +9 =
27
0 votes
Thanks 1
Mesdevoirs88
2x^2 - 3x
avec x=4:
2 x 4^2 - 3 x 4
= 2 x 16 - 12
= 32 - 12
= 20
Avec x= -3
2 x (-3)^2 - 3 x (-3)
= 2 x 9 - (-9)
= 18 + 9
= 27
0 votes
Thanks 1
Mesdevoirs88
^2 veut dire au carré, donc 2x^2 signifie 2x au carré
Mesdevoirs88
Je t'en prie ^^
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Verified answer
Bonsoir2x²-3× pour ×=4 et ×=-3
pour x = 4, on a : 32 - 12 = 20
pour x = -3, on a : 18 +9 = 27
avec x=4:
2 x 4^2 - 3 x 4
= 2 x 16 - 12
= 32 - 12
= 20
Avec x= -3
2 x (-3)^2 - 3 x (-3)
= 2 x 9 - (-9)
= 18 + 9
= 27