Factor completely 36x2 − 49.

a (3x + 7)(12x − 7) b (3x − 7)(12x + 7) c (6x − 7)(6x − 7) d (6x + 7)(6x − 7)

a b c d ?

The correct option is D.

Step-by-step explanation:

The given expression is

It can be written as

Using the formula

Therefore the complete factor form of given expression is (6x+7)(6x-7). The correct option is 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