GIVING BRAINLIEST TO RIGHT ANSWER (WILL CHECK IF CORRECT) Which of the following shows the correct first step to solve x^2-16x=-21 by completing the square?

A) x^2 - 16x + 8 = -21 + 8
B) x^2 - 16x + 64 = -21
C) x^2 - 16x + 16 = -21 + 16
D) x^2 - 16x + 64 = -21 + 64

Answer

Step-by-step explanation:

D-64

The answer is D(64)

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

nlgqer

step-by-step