LHS: =

(using

)
We know

so we can replace the sin²x in the LHS expression as follows

which is the RHS.
Answer:
x=7
Step-by-step explanation:
5x-10=25
+10 +10
5x=35
÷5 ÷5
x=7
To make things easier, Moesha will be variable 'm' and Damian 'd'.
Number of songs in m's library would be 2d+17 and if d= 5, m=27
C. y=2x^2-3x+5 is the correct answer for your problem