The answer is the one that has a denominator of X-5 :)
Honestly I don’t remember how to do this but u can try .083 but don’t count on it
Answer: D) 13y+15y^2
Step-by-step explanation:
(4y+9y)+(-8y^2-7y^2)=13y-15y^2
The solution to the problem is as follows:
<span>cos2A - cos4A = -2 sin(6A/2).sin(-2A/2) = +2 sin(3A).sinA
and
sin4A - sin2A = 2 cos(6A/2).sin(2A/2) = 2 cos(3A).sinA
Hence RHS = (cos(2A)-cos(4A))/ (sin(4A)- Sin(2A)) = sin 3A / cos 3A = tan 3A = LHS
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