Answer:
x=-1
Step-by-step explanation:
4(x+3)=8
4x+12=8
4x=-4
x=-1
When you complete the synthetic division you get 9 as the remainder so your answer is A. 9
Work in image, sorry it’s super messy
Answer:
x = 10/3
Step-by-step explanation:
Solve:
- 7x + 1 = 10x - 9
- 1 = 3x - 9 Isolate x
- 10 = 3x Isolate x
- x = 10/3
x = 
-Chetan K
Given:

It's required to find cos 2θ.
We use the formula:

Substituting:

Operating:

Answer: 1/25
Did you mean to add a image?? we can’t help you if you don’t get us the actual question