The answer to the above question is three
Bring the 7 over to the other side, so you have 4x²-12x-7. Then: (2x-7)(2x+1)
X= 7/2 and -1/2
Find the length of the hypotenuse by using either "sine" or "cosine".
Sine= Length of opposite side/ Hypotenuse
Cosine= Length of adjacent side/ Hypotenuse
In order to use one of these, it depends on which angle they give you other than 90 degrees.
Hope this helps!
