I need help please
2 answers:
Answer:
The value of the expression when x = -1 and y = 2 is -16.
Step-by-step explanation:
Firstly, let's look at .
As the question provides, the value of x is -1. Therefore, we have to find the value of , which is -1.
Now, moving onto .
The question provides us with y = 2. Simply substitute this value into , and we get
.
Finally, concluding the equation, we get 4(-1)(4). That is equal to -16, which is our answer.
Hope this helped!
You might be interested in
now let's recall that a full circle has 360°, so then 1140 = 360 + 360 + 360 + 60.
namely, 1140 is 3 full-go-around the circle and then it lands on the I Quadrant at 60°. Thus cos(1140°) = cos(60°).
what's that cosine of 60°? Check the picture below.
