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soso93600
@soso93600
January 2021
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Bonjour. j'aurais besoin d'aide en maths
développer puis réduire chaque expression
a. (t-6)(t-8)
b. (1,5-x)(6-x)
c. (6-5a)(1-4a)
e. (2x-1)(4x-3)
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maudmarine
Verified answer
Bonjour,
a. (t-6)(t-8)
= t² - 8t - 6t + 48
= t² - 14t + 48
b. (1,5-x)(6-x)
= 9 - 1,5x - 6x + x²
= x² - 7,5x + 9
c. (6-5a)(1-4a)
= 6 - 24a - 5a + 20a²
= 20a² - 29a + 6
e. (2x-1)(4x-3)
= 8x² - 6x - 4x + 4
= 8x² - 10x + 4
1 votes
Thanks 1
soso93600
t forte en maths?
maudmarine
En tout cas je viens de répondre à ton devoir
soso93600
ouais mais si je te passe un otre ex tu pourrais me le faire
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Verified answer
Bonjour,a. (t-6)(t-8)
= t² - 8t - 6t + 48
= t² - 14t + 48
b. (1,5-x)(6-x)
= 9 - 1,5x - 6x + x²
= x² - 7,5x + 9
c. (6-5a)(1-4a)
= 6 - 24a - 5a + 20a²
= 20a² - 29a + 6
e. (2x-1)(4x-3)
= 8x² - 6x - 4x + 4
= 8x² - 10x + 4