Which shows the following expression after the negative exponents have been eliminated? 4x y2 x6 y6

I'm terrible at math any here is appreciated.

Simplify.7x + 3y - 2 + 6x + 1 + y squared 2 you! ; )

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.