Question

Which of the following are unlike terms?

• A. $-5xy{z}^2$,$-3x{y}^{2}z$
• B. $5xy{z}^2$, $25x^{2}yz$
• C. $15yx{z}^2$, $45x{z}^{2}y$
• D. $55xy{z}^2$, $x^2{y}^2{z}^2$

Answer 1

Answer: (A), (B), (D)

The correct options are
A

$-5xy{z}^2$,$-3x{y}^{2}z$

B

$5xy{z}^2$, $25x^{2}yz$

D

$55xy{z}^2$, $x^2{y}^2{z}^2$

Terms containing different variables and powers are called unlike terms.
$-5xy{z}^2$ and $-3x{y}^{2}z$ are unlike terms.

$5xy{z}^2$ and $25x^{2}yz$ are unlike terms.

$15yx{z}^2$ and $45x{z}^{2}y$ are like terms.

$55xy{z}^2$, $x^2{y}^2{z}^2$ are unlike terms.