A = √64x81
A = √64 x √81
A = 8 x 9
A = 72.
B = √2² x 3⁴
B = √2² x √3⁴
B = 2 x √81
B = 2 x 9
B = 18.
C = √8² + 6²
C = √64 + 36
C = √100
C = 10.
D = √(16 - 25)²
D = √(- 9)²
D = √-9 x (-9)
D = √81
D = 9.
E = √5² - 4²
E = √25 - 16
E = √9
E = 3.
Voilà ! Si tu as des questions, n'hésite pas !