Answer:
<u><em>x = ±1</em></u>
Step-by-step explanation:
x² + 0x -1 = 0
x²- 1 = 0
x² = 1
x = ±1
--------------
check
1² + 0x - 1 = 0
1 - 1 = 0
Answer:
Please take a photograph of the graph.
Well, you do 1000-8 then put your answer down.
Answer is 992
Then do 992-8
Answer is 984
Then do 984 - 8
Answer is 976
Then do 976-8
Answer is 968
Then do 968 -8
Answer is 960
Your final answers are 992,984,976,968,960.
1977. All that took was a 3 second search...
Answer:

Step-by-step explanation:
we know that
---> by addition angle postulate
we have
----> given problem
----> given problem
substitute in the expression above

Divide by 2 both sides
