My final answer is (C) because for the side lenghts to be a right triangle, the values of the first and second terms should be equal to the third (a^2 and b^2 =c^2) hope that helped (:
I'll go with A and B
Hope this helps
4(x+5y)(x-3y)
I don't know what you mean by placing the factors on the grid
5 Bc u divide 15 by 3 to get 5