Question

If a = 10^x, b = 10^y and a^y*b^x = 100 then 2xy = ?

Answer 1

Answer:

8

Step-by-step explanation:

Given, a = 10^x, b = 10^y

a^y*b^x=100

it's mean that, 100= 10^2*10^2

Therefore,By conjugate x=2 and y=2.

And, 2xy=2*2*2

=8