Réponse :
Explications étape par étape :
A = -(√19)² = -(√19)x( √19) = -19
B= √32 x √2 = √(32x2) = √64 = 8
C = √(121/144) = √121/√144 = 11/12
D = √(36+64) = √100 = 10
E = √(2³) -2√(2x3²) + √(2^5) = 2√2 - 6√2 + 4√2 = 0
F = (3√2 – 5)(3√2 + 5) = (3√2)² - 5² (identité remarquable). =3²*(√2)² - 25 = 9*2 – 25 = -7
G = √80/3√45 = √(5*16) / 3√(5*9) = 4√5 /9√5 = 4/9
