Answer:
The answer is -6 but its not in the option
Step-by-step explanation:
Let x = -5
[(-5)²-1]/(-5+1)
= (25-1)/(-4)
= 24/-4
= -6
b = 34°
b + 115° + 31° = 180°
b + 146° = 180
b = 180° - 146°
18
Answer: 40
i would help you but i cannot see the image.