Let X and Y be the following sets: X = {9,25}
Y = {1,4,9,16,25}

Which of the following is the set X∖Y?
a - {1,4,9,16,25}
b - {1,4,16}
c - {9,25}

Look, when you want to do something like put it like x^2. x2 could mean x² or x₂. so to clear confusion, know the notation. to find the product multiply the x's and you get -8x and the y's and you get 6y. since it's all being multiplied it is just -8x6y, or answer a. although the better answer is -48xy(combining -8 and 6) because you should multiply constants whenever you can.