bonjour
a + 3 ( 12 - 5 a ) = a + 36 - 15 a = - 14 a + 36
- 12 ( - 3 c - 2 ) - ( 2 c - 12 ) * 5 = 36 c + 24 - ( 10 c - 60 )
= 36 c + 24 - 10 c + 60 = 26 c + 84
3 x ³ + ( b² - 2 x² ) - ( b² - x ³ ) = 3 x ³ + b² - 2 x² - b² + x ³ = 4 x ³ - 2 x²
- ( 3 y + b) - 2 y - ( 2 y + 5 - b ) = - 3 y - 3 b - 2 y - 2 y - 5 + b = - 7 y - 2 b - 5
( 2 x² - 1 ) ( x - 2 ) = 2 x ³ - 4 x² - x + 2
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bonjour
a + 3 ( 12 - 5 a ) = a + 36 - 15 a = - 14 a + 36
- 12 ( - 3 c - 2 ) - ( 2 c - 12 ) * 5 = 36 c + 24 - ( 10 c - 60 )
= 36 c + 24 - 10 c + 60 = 26 c + 84
3 x ³ + ( b² - 2 x² ) - ( b² - x ³ ) = 3 x ³ + b² - 2 x² - b² + x ³ = 4 x ³ - 2 x²
- ( 3 y + b) - 2 y - ( 2 y + 5 - b ) = - 3 y - 3 b - 2 y - 2 y - 5 + b = - 7 y - 2 b - 5
( 2 x² - 1 ) ( x - 2 ) = 2 x ³ - 4 x² - x + 2