The correct answer should be D) 5/6
hope this helps :)
<em>Use the Quadratic Formula </em>
x = -4 + 2 √11i/6, -4 - 2√11i/6
<em>Simplify solutions </em>
x = - 2 - √11i/3, - 2 + √11i/3
The drawing seems to suggest that angles BFA, AFE and EFD span a straight angle, just like angles BFC and CFD
This means that you have

But we know that both BFA and EFD measure 70 degrees, so the equation becomes
![[tex]70+AFE+70=180 \iff AFE + 140 = 180](https://tex.z-dn.net/?f=%20%5Btex%5D70%2BAFE%2B70%3D180%20%5Ciff%20AFE%20%2B%20140%20%3D%20180)
So, if you subtract 140 from both sides, you have

Add them together and subtract so it would be 3/10+2/10=5/10 1-5/10=5/10
The answer is 5/10