1 . 4x2-16

• A. $x+2$
• B. $x+4$
• C. $x+3$
• D. $2\left(x+3 \right)$

Answer: Option D

Explanation:

2 . x2-16

• A. $\left(x^2-4\right)\left(x^2-4\right)$
• B. (x+4) (x-4)
• C. (x+2)(x-2)
• D. $\left(x^2+16\right)\left(x^2-16\right)$

Answer: Option B

Explanation:

3 . 3x2-16x-12

• A. (3x -2) (x +6)
• B. (3x -2) ( x-6)
• C. (3x -6) (3x+2)
• D. 3(x-6) (x-2)

Answer: Option C

Explanation:

4 . ∫x

• A. $\infty ,\infty$
• B. $\mathrm{ℝ},\mathrm{ℝ}$
• C. $\mathrm{ℝ}\setminus \left\{4\right\},\mathrm{ℝ}$
• D. $\mathrm{ℝ}\setminus \left\{4\right\},\mathrm{ℝ}\left\{8\right\}$

Answer: Option D

Explanation:

5 . y2=-8x ও x2-16y

• A. $0$
• B. $\sqrt{2}$
• C. $2\sqrt{5}$
• D. $6$

Answer: Option C

Explanation:

6 . x:5x2-16x+3<0

• A. $1,\frac{1}{2}$
• B. $3,\frac{1}{5}$
• C. $1,\frac{1}{3}$
• D. $1,-\frac{1}{3}$

Answer: Option D

Explanation: