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Jadoucce
@Jadoucce
April 2019
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Bonjour, alors j'ai un petit souci je ne trouve pas la réponse de l'exercice ci-dessous:
Développe et réduis les expressions :
A= 3x-5+5(2x-2)
B= 4y-6(3-2y)+4(y-1)
C=5(t²+3(2t-3)-2t(t-5)
Voilà, merci d'avance !
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maudmarine
Verified answer
Développe et réduis les expressions
:
A = 3x - 5 + 5 (2x - 2)
A = 3x - 5 + 10x - 10
A = 3x + 10x - 5 - 10
A = 13x - 15
B = 4y - 6 (3 - 2y) + 4 (y - 1)
B = 4y - 18 + 12y + 4y - 4
B = 4y + 4y + 12y - 18 - 4
B = 20y - 22
C = 5 (t² + 3 (2t - 3) - 2t (t - 5)
Problème de parenthèse...
C = 5t² + 6t - 9 - 2t² + 10t
C = 5t² - 2t² + 6t + 10t - 9
C = 3t² + 16t - 9
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Verified answer
Développe et réduis les expressions :A = 3x - 5 + 5 (2x - 2)
A = 3x - 5 + 10x - 10
A = 3x + 10x - 5 - 10
A = 13x - 15
B = 4y - 6 (3 - 2y) + 4 (y - 1)
B = 4y - 18 + 12y + 4y - 4
B = 4y + 4y + 12y - 18 - 4
B = 20y - 22
C = 5 (t² + 3 (2t - 3) - 2t (t - 5)
Problème de parenthèse...
C = 5t² + 6t - 9 - 2t² + 10t
C = 5t² - 2t² + 6t + 10t - 9
C = 3t² + 16t - 9