3x3 + 2x2 – 12x - 8 = 0

x=5/12

Step-by-step explanation:

3x3+2x2-12x-8=0

9+4-12x-8=0

13-12x-8=0

-12x+5=0

-12x=-5

x=5/12

Hope this helps plz hit the crown :D

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2