Answer:
option 1.
A = -10x B = -4
Explanation:
if we look at the table every time we multiply the first element of a row by the first element of a column, the result will give us in the box of the table corresponding to these 2
x * 3x^2 = 3x^3 , x * -5x = -5x^2 , x * -2 = -2x
2 * 3x^2 = 6x^2 , 2 * -5x = A , 2 * -2 = B
2 * -5x = A
2 * -5x = -10x
A = -10x
2 * -2 = B
2 * -2 = -4
B = -4