Question

dau coroana.................

Answer 1

( 3¹⁹ x 25⁹)² : 15³⁶ = [3¹⁹ x(5²)⁹]² : 3³⁶ x 5³⁶ = 3³⁸ x5³⁶ : 3³⁶ x5 ³⁶ =3²=9

Answer 2

$(3^{19} \cdot 25^{9} )^{2} : 15^{36} = (3^{19} \cdot 5^{2\cdot9} )^{2}:15^{36} = 3^{19\cdot2} \cdot 5^{2\cdot9\cdot2}: 15^{36} = \\ = 3^{38} \cdot 5^{36} : 15^{36} = 3^{38}\cdot (5:15)^{36} = 3^{38} \cdot(1:3)^{36} = \\ = 3^{38} : 3^{36} = 3^{2} =9$