Addition and Subtraction of Algebraic Expression

Q. What is the sum of $l^2$ + $m^2$, $m^2$ + $n^2$, and $n^2$ + $l^2$?

1. $l^4$ + $m^4$ + $n^4$
2. $l$ + $m$ + $n$
3. 2($l^2$ + $m^2$ + $n^2$)
4. $l^2$ + $m^2$ + $n^2$

Q.

Find the value of $A+B+C$ if :

$A=(7xy+5yz-3zx)$
$B=(4yz+9zx-4y)$
$C=(-3xz+5x-2xy)$

1. $5xy+3zx+5x-4y$

2. $5xy+9yz+3zx+4y$

3. $5xy+9yz+3zx+5x-4y$

4. $5xy+9yz+2zx+5x-4y$

Q.

What must be added to$(x^3+3x-8)$ to get $(3x^3+x^2+6)$?

1. $2x^3+x^2-3x+17$

2. $2x^3+x^2-3x+14$

3. $2x^3+x^2-x+14$

4. $2x^3+4x^2-3x+14$

Q.

abc + bca + cab is _________.

1. a monomial

2. a binomial

3. a polynomial
4. a trinomial

Q. Find the simplified value of ab + 2ab.

1. ab
2. -ab
3. 2ab
4. 3ab

Q.

What should be added to $x^2+3x-8$ to get $x^2+x+6$?

1. - 2$x$ + 14

2. $x$ + 6

3. 2$x$ + 14

4. 3$x^2$ - 8

Q. What has to be added to (a +b) to get (3a +2b)?

1. 2a +b
2. 4a +3b
3. 2a +3b
4. -2a -b

Q.

Which expression matches the statement
"Subtract the sum of $5x$ and $3x$ from $12y$”?

1. $12y-8x$

2. $12y-5x+3x$

3. $5x+3x-12y$

4. $5x+3x+12y$

Q.

If we subtract $-4x^{2}y$ from $2x^{2}y$ we get:

1. $6x^{2}y$

2. $6x^2{y}^2$

3. $-6x{y}^2$

4. $-6x^{2}y$

Q. Subtract $7x-3x^2$ from $4x+8x^2$

1. - 3x

2. 11x² − 5x

3. 11x²

4. 11x² − 3x