• A. $6ax-10ay$
• B. $4x+5y$
• C. $4ax-5ay$
• D. $4x-5y$

Answer: Option D

Explanation:

• A. 204
• B. 1156
• C. 36
• D. 6

Answer: Option C

Explanation:

• A. $\frac{3}{4}$
• B. $\frac{1}{2}$
• C. 144
• D. $\frac{9}{16}$

Answer: Option B

Explanation:

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

Answer: Option A

Explanation:

• A. $\left(1+a-b\right)\left(1-a+b\right)$
• B. $\left(1+a+b\right)\left(1-a+b\right)$
• C. $\left(1+a+b\right)\left(1-a-b\right)$
• D. $\left(1-a+b\right)\left(1-a-b\right)$

Answer: Option A

Explanation:

• A. (1+a+b)(1-a+b)
• B. (1+a+b)(1-a-b)
• C. (1+a+b)(1+a-b)
• D. (1+a-b)(1-a+b)

Answer: Option D

Explanation:

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

Answer: Option A

Explanation:

• A. $a-b$
• B. $a+b$
• C. $12\left(a^2-b^2\right)$
• D. $2$

Answer: Option D

Explanation:

• A. 659
• B. 694
• C. 841
• D. 859

Answer: Option C

Explanation:

• A. ${\left(a+b\right)}^2-{\left(a-b\right)}^2$
• B. ${\left(a-b\right)}^2-{\left(a+b\right)}^2$
• C. ${\left(a+b\right)}^2+{\left(a-b\right)}^2$
• D. ${\left(a+b\right)}^2-4ab$

Answer: Option C

Explanation:

• A. $5/8$
• B. $7/8$
• C. $9/8$
• D. $11/8$

Answer: Option B

Explanation:

• A. 2
• B. 1
• C. $\frac{1}{2}$
• D. $\frac{1}{0}$

Answer: Option B

Explanation:

• A. $2\left(a-8\right)$
• B. $\left(a+5\right)$
• C. $\left(a+4\right)$
• D. $\left(a+8\right)$

Answer: Option D

Explanation:

• A. $2\left(a-8\right)$
• B. $\left(1+5\right)$
• C. $\left(a+4\right)$
• D. $\left(a+8\right)$

Answer: Option D

Explanation:

• A. (a+5b)(2a-3b)
• B. (a-5b)(2a+3b)
• C. (a-5b)(2a-3b)
• D. (a-5b)(a+5b)

Answer: Option A

Explanation: