the sum if the 4th and 6th term of an AP is 42 the sum of the 3rd and 9th term of the progration is 52. find the first term. find the common difference. find the sum of the first ten term of the progration​

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.