Subtract 5y^2 + 3y + 11 from 4y^2 + 7 - 6y. show steps please i know the answer but i need the steps :/

I got -y^2 - 9y -4 (I hope it helps)

Step-by-step explanation:

4y^2 - 5y^2= -y^2

7-11= -4

-6y + -3y= -9y

-y^2 -9y -4

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