Réponses

2014-05-04T19:03:47+02:00
BOnsoir

(-5/4 +15/8) : - 3/2
( -10/8 + 15/8) : -3/2
5/8 x -2/3 = -10/24 = - 5/12

(3 -7/5) + (1/2 +3/5) - (1/4 +1/5)
(15/5 -7/5) + ( 5/10 + 6/10) - (5/20 + 4/20)
8/5 + 11/10 - 9/20
32/20 + 22/20 - 9/20 = 45/20 = 9/4

4√17 + √1377 -6√833 +3√425
4√17 + 9√17 - 42√17 + 15√17 = -14√17

Y = 2/√3 = 2√3/3
Z = √3 /4-√3 = -3√3/4