Need on this still lost on both of them

4x^3 + x^2 - 12x - 3

Step-by-step explanation:

(4x+1)(x^2 - 3)

use FOIL

(4x)(x^2) + (4x)(-3) + (1)(x^2) + (1)(-3)

4x^3+(-12x) + x^2 + (-3)

4x^3 + x^2 - 12x - 3

idk

step-by-step explanation:

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