• A. x=0
• B. x+y=1
• C. 3x + 4y = 3
• D. $y=\frac{1}{x}$

Answer: Option D

Explanation:

• A. $d_1{d}_2$
• B. $\frac{1}{2}{d}_1{d}_2$
• C. $2d_1{d}_2$
• D. $4d_1{d}_2$

Answer: Option B

Explanation:

• A. $৪৫°$
• B. $৯০°$
• C. $৬০°$
• D. $৩০°$

Answer: Option B

Explanation:

• B. 1
• C. 2
• D. 3

Answer: Option A

Explanation:

• A. $0°$
• B. $45°$
• C. $x\_90$
• D. $x°$

Answer: Option D

Explanation:

• A. $42°$
• B. $32°$
• C. $48°$
• D. $38°$

Answer: Option A

Explanation:

• A. 14
• B. 12
• C. 16
• D. 18

Answer: Option A

Explanation:

• A. -12
• B. -48
• C. 42
• D. 21

Answer: Option D

Explanation:

• A. 80
• B. 120
• C. 110
• D. 90

Answer: Option B

Explanation:

• A. 14
• B. 11
• C. 12
• D. 13

Answer: Option A

Explanation:

• A. $a^2+b^2$
• B. $a^2-b^2$
• C. $\frac{{\left(a+b\right)}^2}{2}-\frac{{\left(a-b\right)}^2}{2}$
• D. ${\left(a+b\right)}^2+{\left(a-b\right)}^2$

Answer: Option A

Explanation:

• A. 69
• B. 79
• C. 89
• D. 91

Answer: Option C

Explanation:

• A. 6
• B. 9
• C. 4
• D. 12

Answer: Option A

Explanation:

• A. 50
• B. 125
• C. 5
• D. 1

Answer: Option D

Explanation:

• A. 52
• B. 46
• C. 26
• D. 22

Answer: Option C

Explanation: