Question

Which expression can you simplify by combining like terms?

A 12b2+4ab-3ba-6
B 17a2-6b2a+4ba-9
C 5b2-5a2+8a-b
D 14a2+6ab−3b−3a

Answer 1

The correct option is A.

Step-by-step explanation:

If the degree and variables of two terms are same, then they are called like terms.

In option A.

The given expression is

`12b^2+4ab-3ba-6`

Here, 4ab and -3ab are like terms because both have same variables a and b with degree 1.

By combining like terms we get

`12b^2+(4ab-3ab)-6`

`12b^2+ab-6`

In options B, C and D, there are no like terms, So only the expression
`12b^2+4ab-3ba-6` we can simplify by combining like terms.

Therefore the correct option is A.