Could you make the picture clear and back it up a little then i will see it better
One polynomial identity that crops up often in various areas is the difference of squares identity:
A2-b2=(a-b) (a+b)
We meet this in the context of rationalising denominators.
Answer:
Plug this in a calculator and the answer will pop up.
Step-by-step explanation:

(-5,2) concave up
Hope this helps :)
Answer:

Step-by-step explanation:
sine of A = 
opposite = 5
adjacent = 12
hypotenuse = 13