Find the given limit lim(x, y)→(a, a)x4−y4x2−y2=lim(x, y)→(a, a) (x^4−y^4)/(x2−y2)= here aa is a constant. (find the limit assuming x≠y)

Someone me! if you’re smart you can solve this!

What is always true about a positive integer raised to a negative odd power?

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of