Answer:
number 1 or A i got it
Step-by-step explanation:
Minus 12x both sides
0=5x^2-12x+9
use quadratic formula
for 0=ax^2+bx+c
x=
given
5x^2-12x+9
a=5
b=-12
c=9
remember: i=√-1
The range is the difference between the highest and lowest values in a set of numbers. To find it, subtract the lowest number in the distribution from the highest.
LHS: =

(using

)
We know

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

which is the RHS.