Answer:
Option B is correct, i.e. the value of A is -3x^2.
Explanation:
Given is the matrix of multiplying binomials.
We can multiply the row and column to find the elements A, B, C, D.
D is given 10 which indicates 5*2 = 10
Similarly A = 3x * -x = -3x^2
B = 5 * -x = -5x
C = 3x * 2 = 6x
Hence, option B is correct, i.e. the value of A is -3x^2.