Answer:
The value of A is -3x, the value of B is 14x and the value of C is -21. A and B are like terms.
Step-by-step explanation:
From the given table it is noticed that the values in first row are x and 7. The values in first column are 2x and -3.
Multiply each row value with column values.
[tex]x\times 2x=2x^2[/tex]
[tex]A=x\times (-3)=-3x[/tex]
[tex]B=7\times 2x=14x[/tex]
[tex]C=7\times (-3)=-21[/tex]
The value of A is -3x, the value of B is 14x and the value of C is -21.
Two terms are called like terms if they have same variables with same power.
Since A and B have variable x with degree 1 but C is constant, therefore A and B are like terms.