Question

Which of the following is an example of unlike terms?

• A. $12\&91$
• B. $8x\&10x$
• C. $130\&1499z$
• D. $15xyz\&91xyz$

Answer 1

The correct option is C $130\&1499z$

Terms having different algebraic factors are unlike terms.

$\left(i\right)---12\&91$

$12=12x^0\&91=91x^0$

$\Rightarrow$ Both terms contain same algebraic factor, so they are not unlike terms.

$\left(ii\right)---8x\&10x$

$\Rightarrow$ Both terms contain same algebraic factor, so they are not unlike terms.

$\left(iii\right)---130\&1499z$

$130=130x^0\&1499z$

$\Rightarrow$ Both terms contain different algebraic factors, so they are unlike terms.

$\left(iv\right)---15xyz\&91xyz$

$\Rightarrow$ Both terms contain same algebraic factors, so they are not unlike terms.