13.7k views
3 votes
Cuanto me da como resultado

Cuanto me da como resultado-example-1

1 Answer

4 votes

Explanation:

1)
(-4)^2{\cdot}(-4)

We know that,
a^x{\cdot}a^y=a^(x+y)


(-4)^2{\cdot}(-4)=(-4)^(2+1)\\\\=(-4)^3\\\\=64

2)
(-2)^5{\cdot} (-2)^3

Again using above property,


(-2)^5{\cdot} (-2)^3=(-2)^8\\\\=256

3)
5^(-3)

We know that,


a^(-x)=(1)/(a^x)

So,


5^(-3)=(1)/(5^3)\\\\=(1)/(125)

4)
2.5^2=2.5* 2.5\\\\=6.25

Hence, this is the required solution.

User Meir Gerenstadt
by
8.8k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories