Bonjour,
A = 9² x 16 x (27 x 4)²
= (3²)² x 2⁴ x (3³)² x (2²)²
= 3⁴ x 2⁴ x 3⁶ x 2⁴
= 2⁸ x 3¹⁰
B = (3 x 8)³ x 21 x 25⁴ x 35²
= 3³ x 2⁹ x 3 x 7 x 5⁸ x 7² x 5²
= 2⁹ x 3⁴ x 5¹⁰ x 7³
C = 21 x 35 x 100 x 84
= 3 x 7 x 5 x 7 x 2² x 5² x 2² x 3 x 7
= 2⁴ x 3² x 5³ x 7³
D = 2⁴ x 4² x 25 x 7 x 21
= 2⁴ x 2⁴ x 5² x 3 x 7²
= 2⁸ x 3 x 5² x 7²
Bonne journée.
