Question

(r-2) ( r-10) please explain this question​

Answer 1

Answer:

Exponent means increasing the value by its base. So for example we have, 10^2, meaning increase the value of the base (=10) by itself twice, so 10^2 = 100.

Now 10^-2, meaning inverse exponent. Inverse of increment, yes you guessed it right, decrement it. So we reduce by itself twice, 1/100, which is 0.01.

Hope this satiates your curiosity.