The answer is 5/9.
(P.S. I got the step by step solution from a Socratic Question and Answer website)
Answer:
-3
Step-by-step explanation:
Simplified polynomial: 4x^2 + 2x - 5
Plug in -1: 4(-1)^2 + 2(-1) - 5
= -3
Answer:
sin -115 = -0.91, cos -115 = -0.42
Step-by-step explanation:

Break the expression into group:

factor out x from 4x² - 5x : x (4x-5)
factor out 3 from 12x-15 : 3 (4x-5)

factor out common term (4x-5) :

hope this helps!