I’m not 100% sure but isn’t it x2 +xy +y2?
Logarithm properties:
According to this, we can get:
I think you have to estimate to a whole so 2 1/2 would be 3
<span>Anna learns in her science class that the human eye blinks an average of 4,200,000 times a year. What is this number expressed in scientific notation?</span>