Answer:
B
Step-by-step explanation:
(-4-5)/(2-(-4))
= -9/6
= -3/2
hope this helped!
Answer:20
sin⁴ x − sin² x
Factor:
(sin² x) (sin² x − 1)
Pythagorean identity:
(1 − cos² x) (-cos² x)
Distribute:
-cos² x + cos⁴ x
cos⁴ x − cos² x