1 . x3-x2

• A. 2
• B. 4
• C. -6
• D. -8

Answer: Option B

Explanation:

2 . x3-x5=2

• A. 1
• B. 3
• C. 12
• D. 15

Answer: Option D

Explanation:

3 . y=x-x2+x3-x4+.........∞

• A. $\frac{y}{1-y}$
• B. $\frac{y}{1+y}$
• C. $\frac{-y}{1+y}$
• D. $\frac{y}{y-1}$

Answer: Option A

Explanation: