Like terms

Q.

Which of the following is a pair of like terms?

1. $–7x{y}^{2}z,–7x^{2}yz$

2. $–10xy{z}^2,3xy{z}^2$

3. $3xyz,3x^2{y}^2{z}^2$

4. $4xy{z}^2,4x^{2}yz$

Q. Identify the like terms in the algebraic expression $x^2+y^2+z^2+2xy+2yz+2zx+4x^2$

1. $y^2$ and $2yz$
2. $z^2$ and $2zx$
3. $x^2$ and $2xy$
4. $x^2$ and $4x^2$

Q.

Simplify $4x-\left(3y-x+2z\right)$.

Q.

State if the given pairs of terms are like or unlike.

$xyz,8765zxy$

Q. Are the following monomials like terms?
$-2a^3{b}^4$ and $-4a^3{b}^2$

1. Yes
2. No
3. Can't be determined

Q. What algebraic expression must be added to $9y$ to get $25x?$

1. $16y$
2. $16x$
3. $25x-9y$
4. $25y-9x$

Q. Are the following monomials like terms?
$-5x^2$ and $x12x$

1. Yes
2. No
3. Can't be determined

Q. Which among the following is/are not like terms to $9x^2$?

1. $3x$
2. $81x^2$
3. $99x^2$
4. $729x^3$

Q. Select the odd one out.
$4x^{4}yz$, $6x{y}^{4}z$, $2y{x}^{4}z$, $zy{x}^4$

1. $4x^{4}yz$
2. $6x{y}^{4}z$
3. $2y{x}^{4}z$
4. $zy{x}^4$

Q. Which of the terms given below is a like term to $-7a^5{b}^4$?

1. $-14a^4{b}^5$
2. $7a^4{b}^4$
3. $-36a^5{b}^5$
4. $-81a^5{b}^4$

Q. Match the like terms.

1. $5z{x}^3$
2. $10zw$
3. $5z{x}^2$
4. $10yw$

Q.

State if the given pairs of terms are like or unlike.

$-25xy,-25yz$.