Answer:
Option 1.
Step-by-step explanation:
Like terms : Two terms are called like terms if they have same variables of same degree.
We need to find the expression that can be simplify by combining like terms
.
It means we have to find the expression which contains like terms.
In option 1,
The given expression is
[tex]6d^2+5cd-3dc+8[/tex]
In this expression 5cd and -3dc are like terms. On combining like terms we get
[tex]6d^2+(5cd-3dc)+8[/tex]
[tex]6d^2+2dc+8[/tex]
So, this expression can simplify by combining like terms.
There are no like terms in other three expressions.
Therefore, the correct option is 1.
