Which of the binomials below is a factor of this trinomial?
x2 + χ- 20
Α. χ+ 4
Β. x-4
C. χ- 2
D. X+ 2

B

Step-by-step explanation:

x^2+x-20 factored is (x-4)(x+5)! therefore B, (x-4), would be correct. :,3

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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