Răspuns:
Explicație pas cu pas:
a)
= 2⁶*5⁶:2⁵*5⁵
= 2⁶:2⁵ *5⁶:5⁵
=2⁶⁻⁵*5⁶⁻⁵
= 2¹*5¹
=2*5
=10
-
b)
= 15²ˣ⁵:(3⁹*5⁸)
= 15¹⁰: (3⁹*5⁸)
= 3¹⁰*5¹⁰:3⁹*5⁸
=3¹⁰:3⁹*5¹⁰:5⁸
=3¹⁰⁻⁹ *5¹⁰⁻⁸
= 3¹*5²
=3*25
= 75
-
c)
=25¹⁰*4¹⁰ : 2¹⁹*5¹⁹
=(5²)¹⁰*(2²)¹⁰ : 2¹⁹*5¹⁹
= 5²ˣ¹⁰ * 2²ˣ¹⁰ : 2¹⁹*5¹⁹
= 5²⁰*2²⁰:2¹⁹*5¹⁹
= 5²⁰:5¹⁹ *2²⁰:2¹⁹
=5²⁰⁻¹⁹* 2²⁰⁻¹⁹
= 5¹*2¹
= 5*2
= 10
