bonsoir,
A = 2 x + 3 x + 5 x - x
A = 9 x
B = - 3 y + x + 2 y + x
B = - y + 2 x
C = 4 x² - 1 - 3 x + 7
C = 4 x² - 3 x + 6
D = 9 x² - 2 - ( - x + 9 x ³ + 2) - x
D = 9 x² - 2 + x - 9 x³ + 2 - x
D = - 9 x ³ + 9 x²
E = 13 a + 5 a /2 - 2 a + 3 /2
E = 13 a + 2.5 a - 2 a + 1.5
E = 13 .5 a + 4
F = 2 a /3 + ( a + 1) /4 + ( a - 2 )/ 6
F = 8 a /12 + ( 3 a + 3 ) / 12 + ( 2 a - 4 ) /12
F = ( 8 a + 3 a + 2 a - 4 ) / 12
F = ( 13 a - 4 ) / 12
G = ( 4 a ⁴ - a ) / 3 - a ⁴
G = ( 4 a ⁴ - a ) 3 - 3 a⁴ / 3
G = ( 4 a ⁴ - a - 3 a⁴ ) / 3
G = ( a⁴ - a) / 3
