All possible outcomes for flipping a coin three times are listed below: (H = heads up, T = tails up)
{HHH, THH, HTH, HHT, TTH, THT, HTT, TTT}

What is the probability of obtaining at least 2 heads?

1.) 18+5 is one way i’m pretty sure there are others but i can’t think of them right now

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.