Given A= (8 -3 3 y+2), B= (3x z+4 w 1/2y), C=(x 2z 4 y). What is the value of matrix B of A+B=C

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.