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Lolahiver
@Lolahiver
April 2019
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Développe et réduit
(9a-9)(6a+8)-4(7a-8)
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maudmarine
Verified answer
(9a-9)(6a+8)-4(7a-8)
= 54a² + 72a - 54a - 72 - 28a + 32
= 54a² + 72a - 54a - 28a - 72 + 32
= 54a² - 10a - 40
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laurinesup
(9a-9)(6a+8)-4(7a-8)
54a²+72a-54a-72-28a+32
54a²-10a-40
0 votes
Thanks 0
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Verified answer
(9a-9)(6a+8)-4(7a-8)= 54a² + 72a - 54a - 72 - 28a + 32
= 54a² + 72a - 54a - 28a - 72 + 32
= 54a² - 10a - 40
54a²+72a-54a-72-28a+32
54a²-10a-40