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Lbeyer4
@Lbeyer4
April 2019
2
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Bonjour
Les deux calculs svp
Merci d'avance
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maudmarine
Verified answer
D = (x + 3) (x - 4) + (x + 3) * 7
D = x² - 4x + 3x - 12 + 7x + 21
D = x² - 4x + 3x + 7x - 12 + 21
D = x² + 6x + 9
E = (x + 4) (x - 7) + (2x + 1) (x - 5)
E = x² - 7x + 4x - 28 + 2x² - 10x + x - 5
E = x² + 2x² - 7x - 10x + 4x + x - 28 - 5
E = 3x² - 12x - 33
2 votes
Thanks 1
QuentinB62790
D = x² - 4x + 3x - 12 + 7x + 21
= x² + 6x + 9
E= x² - 7x + 4x - 28 + 2x² - 10x + 1x - 5
= 3x² - 12x - 33
1 votes
Thanks 1
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Verified answer
D = (x + 3) (x - 4) + (x + 3) * 7D = x² - 4x + 3x - 12 + 7x + 21
D = x² - 4x + 3x + 7x - 12 + 21
D = x² + 6x + 9
E = (x + 4) (x - 7) + (2x + 1) (x - 5)
E = x² - 7x + 4x - 28 + 2x² - 10x + x - 5
E = x² + 2x² - 7x - 10x + 4x + x - 28 - 5
E = 3x² - 12x - 33
= x² + 6x + 9
E= x² - 7x + 4x - 28 + 2x² - 10x + 1x - 5
= 3x² - 12x - 33