Which of the following can be added to the number indicated on the number line above to sum to 0? A;0.6 B;1.4 C;-0.6 D;-1.4

A. is the answer in this question

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.