Question

Could someone check these multiple choice answers that I have figured out to make sure they are right???

9.
Simplify. 2/3a times 2/a^2
4 / 3a^2; where a =/ 0
1 / a^2; where a =/ 0
4 / 3a^3; where a =/ 0***
4 / 3a^2

14.
Divide. x^2 + 2x + 1 over x -2 over x^2 – 1 over x^2 – 4
• (x + 1)(x + 2) over x - 1
• (x - 1)(x - 2) over x + 1***
•
• (x - 1)(x + 2) over x + 1
•
• (x + 1)(x - 2) over x - 1
•
16.
Add or subtract. 7 / x -3 + 3/ x -5
• -10x – 44 over (x - 3)(x - 5)
• 10x – 44 over (x - 3)(x - 5)
• 10x over (x - 3)(x - 5)
• 10x + 44 over (x - 3)

Answer 1

Plz help me??