The perimeter of a trapezoid is represented by the expression 32W + 20. Write an expression to represent the missing side length if three of the side
lengths are 3w+1, 5w - 8, and 7w +9.

Its a right angled triangle not a right triangle

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.