Answer:
The answer is C .
Step-by-step explanation:
“ -/x/ + 3”
Hi there!
To solve, we must use the following trig identity:
sin(u - v) = sin(u)cos(v) - sin(v)cos(u)
We can rewrite the left hand side of the equation as:

Split the fraction:

First fraction reduces to 1:

Simpify each with common arguments:

Answer:
A and E
Step-by-step explanation:
-3(x - y) = -3x + 3y = 3y - 3x
A. E
The expression foiled together is 6(-3x^2+13xy-4y^2)