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Besoindaideee
@Besoindaideee
April 2019
2
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Salut urgent s'il vous plait je n'y comprends rien c'est un devoir de mathématiques je dois réduire les expressions suivantes:
7x+15-15x:
9x+7-8x+4-3:
x (au carré)-3x+4x(au carré)
Merci d'avance :)
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winner123
Verified answer
Bonsoir
7 x + 15 - 15 x = - 8 x + 15
9 x + 7 - 8 x + 4 - 3 = x + 8
x² - 3 x + 4 x² = 5 x² - 3 x
1 votes
Thanks 1
PAU64
7x + 15 - 15x =
7x - 15x + 15 =
- 8x + 15
9x + 7 - 8x + 4 - 3 =
9x - 8x + 7 + 4 - 3
1x + 11 - 3
1x + 8
x² - 3x + 4x² =
4x² + x² - 3x
5x² - 3x
2 votes
Thanks 1
PAU64
de rien :)
PAU64
3x² + 2x - 5x² + 6x = - 2x² + 8x
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Verified answer
Bonsoir7 x + 15 - 15 x = - 8 x + 15
9 x + 7 - 8 x + 4 - 3 = x + 8
x² - 3 x + 4 x² = 5 x² - 3 x
7x - 15x + 15 =
- 8x + 15
9x + 7 - 8x + 4 - 3 =
9x - 8x + 7 + 4 - 3
1x + 11 - 3
1x + 8
x² - 3x + 4x² =
4x² + x² - 3x
5x² - 3x