Sagot :
a= 3 (16xcarré - 8x +1) = 0 a= 48 x carré -24x +3 on remplace x par 0 il reste a = 3
b = (3/5 + x)( 4x - 1/7) = 12x/5 - 3/35 + 4x² - x/7 = 0 donc b = 3/35
c = (3/7 x + 2 ) ( 4 - 5/6 x) = 0
c = 12/7 x - 15 /42x² + 8 - 10 /6 x = 0
c = 8
a= 3 (16xcarré - 8x +1) = 0 a= 48 x carré -24x +3 on remplace x par 0 il reste a = 3
b = (3/5 + x)( 4x - 1/7) = 12x/5 - 3/35 + 4x² - x/7 = 0 donc b = 3/35
c = (3/7 x + 2 ) ( 4 - 5/6 x) = 0
c = 12/7 x - 15 /42x² + 8 - 10 /6 x = 0
c = 8