bonjour
exercice 2
A = 3 x - 6 + 15 - 5 x
= - 2 x + 9
B = 3 x + x² - 2 x + 10
= x² + x + 10
c = - 2 x + 14 - 2 x² - 2 x + 4 x² + 4
= 2 x² - 4 x + 18
D = - 2 x² + 10 x - x² + x ³
= x ³ - 3 x² + 10 x
E = - 12 x ³ + 18 x² - 3 x - 12 x² + 3 x - 12 x²
= - 12 x³ - 6 x²
exercice 3
B = x² + 6 x - 4 x - 24
= x² + 2 x - 24
C = 2 a² - 7 a - 10 a + 35
= 2 a² - 17 a + 35
D = 4 x + 12 - x³ - 3 x²
= - x ³ - 3 x² + 4 x + 12
F = - 4 - 12 x + 2 x + 6 x²
= 6 x² - 10 x - 4
H = 4 - 2 x - 2 x + x²
= x² - 4 x + 4
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bonjour
exercice 2
A = 3 x - 6 + 15 - 5 x
= - 2 x + 9
B = 3 x + x² - 2 x + 10
= x² + x + 10
c = - 2 x + 14 - 2 x² - 2 x + 4 x² + 4
= 2 x² - 4 x + 18
D = - 2 x² + 10 x - x² + x ³
= x ³ - 3 x² + 10 x
E = - 12 x ³ + 18 x² - 3 x - 12 x² + 3 x - 12 x²
= - 12 x³ - 6 x²
exercice 3
B = x² + 6 x - 4 x - 24
= x² + 2 x - 24
C = 2 a² - 7 a - 10 a + 35
= 2 a² - 17 a + 35
D = 4 x + 12 - x³ - 3 x²
= - x ³ - 3 x² + 4 x + 12
F = - 4 - 12 x + 2 x + 6 x²
= 6 x² - 10 x - 4
H = 4 - 2 x - 2 x + x²
= x² - 4 x + 4