Question

Which of these is true about 5^2 + 5^(-2)?

a) it is equal to 1
b) it is equal to 0
c) it lies between 24 and 25
d) it lies between 25 and 26​

Answer 1

d) it lies between 25 and 26

Explanation:

5^2 + 5^(-2) = 5 × 5 + 1/5^2 = 25 + 1/25 = 25 1/25

So, the correct answer is d) it lies between 25 and 26