What is the exact value of the trigonometric expression in simplest form?

2cos(3π/4)−4sin(7π/6)

2 (-sqrt2/2) - 4 (-1/2) = -sqrt 2 +2

−2-√-2

2+√2

2−√2

−2+√2

these are the only options ,I cant find which one matches with your response

I meant to respond to your response

-sqrt2 +2 = 2 - sqrt2 Third choice

That makes sense, i see it now.Thank You