Sagot :
D'abord, r=racine carré.
(4r3 x r3 + 4r3 x 2 - r3 - 2) - 7r3
=4x3 + 8r3 - r3 - 2 - 7r3
=12 + 7r3 - 2 - 7r3
=12-2 + 7r3-7r3
=10
(4r3 x r3 + 4r3 x 2 - r3 - 2) - 7r3
=4x3 + 8r3 - r3 - 2 - 7r3
=12 + 7r3 - 2 - 7r3
=12-2 + 7r3-7r3
=10