mr . bajada paid 200000 as down payment for a farm .the remaining amount is to be settled by paying 16 200 at the end of each month for 5 years . if interest is 5 % compounded semi annually what is the cash price of his farm

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.