1 . 18x+y3,24x+y2

• A. $2\left(x+y\right)$
• B. $x-y$
• C. $x+y$
• D. $2\left(x-y\right)$

Answer: Option A

Explanation:

2 . x+y2-x-y2=

• A. $xy$
• B. $2xy$
• C. $3xy$
• D. $4xy$

Answer: Option D

Explanation:

3 . x-y=10,xy=5

• A. 80
• B. 120
• C. 110
• D. 90

Answer: Option B

Explanation:

4 . x+y2

• A. 49
• B. -29
• C. -1
• D. 0

Answer: Option A

Explanation:

5 . x2+y2+b=8,xy=7

• A. ১৪
• B. ১৬
• C. ২২
• D. ৩০

Answer: Option C

Explanation:

6 . x-y=10,xy=5

• A. 80
• B. 120
• C. 110
• D. 90

Answer: Option B

Explanation:

7 . x+y2=164

• A. 6
• B. 9
• C. 4
• D. 12

Answer: Option A

Explanation:

8 .  x3-y3+8x+y2

• A. 1304
• B. 1034
• C. 1044
• D. 1372

Answer: Option A

Explanation:

9 . x+y2=14

• A. 12
• B. 14
• C. 16
• D. 18

Answer: Option D

Explanation:

10 . x2+y2=8

• A. 19
• B. 20
• C. 21
• D. 22

Answer: Option D

Explanation:

11 . x2+y2=8

• A. ২০
• B. ৩০
• C. ৪০
• D. ৫০

Answer: Option B

Explanation:

12 . x2+y2=4

• A. 14
• B. 16
• C. 22
• D. 30

Answer: Option C

Explanation:

13 . x2+y2

• A. xy
• B. 2xy
• C. -xy
• D. 4xy

Answer: Option B

Explanation:

14 . x2-y2 , x+y2 , x3+y3

• A. $x-y$
• B. $x+y$
• C. $\left(x^2-y^2\right)\left(x^3+y^3\right)$
• D. $\left(x-y\right){\left(x+y\right)}^2\left(x^2-xy+y^2\right)$

Answer: Option B

Explanation:

15 . x+y=2

• A. 4
• B.
• C.
• D.

Answer: Option A

Explanation:

16 . x2+1x2=8

• A. $14$
• B. $16$
• C. $22$
• D. $24$

Answer: Option C

Explanation:

17 . cos3θ=x+y24xy

• A. $0°$
• B. $90°$
• C. $30°$
• D. $60°$

Answer: Option A

Explanation:

18 . x+y=6

• A. 4
• B. 6
• C. 8
• D. 36

Answer: Option D

Explanation:

19 . x+y=17

• A. 49
• B. 8
• C. 9
• D. 10

Answer: Option A

Explanation:

20 . x+y2

• A. 4
• B.
• C.
• D.

Answer: Option A

Explanation: