X⊃2;+X⊃2; =
Answer: C
Here the given expression,
X⊃2; + X⊃2; is an algebraic expression. Here in this expression the terms are like terms. Now to add them, add their coefficients.
Here in the given expression, the like terms are two X⊃2;
Hence, adding their coefficients i.e, 1 + 1 = 2
Therefore,
X⊃2; + X⊃2; = 2X⊃2;.