bonjour
A ) ( x + 2 ) ( x + 3 ) = ( x - 3 ) ( x + 4 )
A . x² + 3 x + 2 x + 6 = x² + 4 x - 3 x - 12
a . x² + 5 x + 6 = x² + x - 12
b. 21 x² + 12 x - 35 x - 20 = 12 x + 72 x² + 3 x + 18
21 x² - 23 x - 20 = 72 x² + 15 x + 18
c . - 4 .4 x ² - 16 x - 15.4 x - 56 = 11 x - 3 x² - 462 + 126 x
- 4.4 x² - 31.5 x - 56 = - 3 x² + 137 x - 462
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bonjour
A ) ( x + 2 ) ( x + 3 ) = ( x - 3 ) ( x + 4 )
A . x² + 3 x + 2 x + 6 = x² + 4 x - 3 x - 12
a . x² + 5 x + 6 = x² + x - 12
b. 21 x² + 12 x - 35 x - 20 = 12 x + 72 x² + 3 x + 18
21 x² - 23 x - 20 = 72 x² + 15 x + 18
c . - 4 .4 x ² - 16 x - 15.4 x - 56 = 11 x - 3 x² - 462 + 126 x
- 4.4 x² - 31.5 x - 56 = - 3 x² + 137 x - 462