Addition of Unlike Terms

Q. What is the formula for $a^2+b^2$?

Q.

When $7xy+5yz-3zx$, $4yz+9zx-4y$ and $-3xz+5x-2xy$ are added, we get

1. $5xy+9yz+3zx+5x–4y$

2. $5xy+9yz+15zx+5x–4y$

3. $5xy+9yz-3zx+5x–4y$

4. $5xy+9yz+3zx-5x–4y$

Q.

The sum of two binomials is $5x^2-6x$. If one of the binomial is $3x^2-2x$. What is the other binomial ?

1. $2x^2-4x$

2. $2x^2-8x$

3. $8x^2-8x$

4. $8x^2-4x$

Q. If 3a+2b+4c=26 and6b+4a+2c=48 then a+b+c= ?

Q.

Question 1(vi)
Multiply the binomials:
$(\frac{3}{4}{a}^2+3b^2)and4(a^2-\frac{2}{3}{b}^2)$

Q.

Subtract (ap+bq-cr) from (a+b+c)(p+q+r) . [1 MARK]

Q.

When we add $5a^{2}b+6ab+7bc+54$ to $14ab+8bc+16$, we will get:

1. b + 6ab + 7bc + 8ac + 70
   
   

2. b + 20ab + 7bc + 8ac + 70
   
   

3. b + 20ab + 7bc + 70
   
   

4. b + 16ab + 7bc + 8ac + 70
   
   

Q.

Find ab + 2ab.

1. ab

2. 3ab

3. -ab

4. 2ab

Q.

abc + bca + cab is a___.

1. Monomial

2. Binomial

3. Trinomial
4. Polynomial

Q.

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

1. $11x^2-3x$

2. $-3x$

3. $11x^2-5x$

4. $11x^2$

Q. If <2a<3/2 then prove that {2+(2+2cos4a)}=2sina

Q. Find the missing expression:
${(4pq+3q)}^2-{(4pq-3q)}^2=$ _________.

1. $44p{q}^2$
2. $48p{q}^2$
3. $48p^{2}q$
4. $44p^{2}q$

Q.

The sum of $12abx$, $2a^{2}bx$, $8abx$ and $8a^{2}bx$ is

1. $10abx$ + $20a^{2}bx$

2. $30a^3{b}^2{x}^2$

3. $20abx$ + $10a^{2}bx$

4. none of the above

Q.

If the sum of $13mn$, $-7nm$, $4m$ and $7mn$ is $x$, then $x$ = $14mn$+$4m$.

1. True

2. False

Q.

What must be subtracted from $(4x^3-3x+5)$ to get $(2x^2-3x^3+5x-2)$ ?

1. $x^3-2x^2-8x+7$

2. $7x^3+2x^2-8x+7$

3. $7x^3-2x^2-8x+3$

4. $7x^3-2x^2-8x+7$

Q.

When we add $5a^{2}b+6ab+7bc+54$ with $14ab+8ac+16$, we will get:

1. b + 20ab + 7bc + 70
   
   

2. b + 6ab + 7bc + 8ac + 70
   
   

3. b + 16ab + 7bc + 8ac + 70
   
   

4. b + 20ab + 7bc + 8ac + 70
   
   

Q. If , then x² + y² =
(a) 0
(b) 1
(c) 100
(d) none of these

Q.

$\text{Find the sum of}$
$(11x^2-8x+4)\text{and}(6x^2+7x-10).$

1. $17x^2-x-6$

2. $17x^2-x+6$

3. $17x^2+x-6$

4. $18x^2-x-6$