Answer:
B. 1.14, -0.77
Step-by-step explanation:
As you know the quadratic formula gives you the solution to
ax² + bx + c = 0
as ...
[tex]x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]
Here, we have a=8, b=-3, c=-7, so the formula tells us the solution is ...
[tex]x=\dfrac{-(-3)\pm\sqrt{(-3)^2-4(8)(-7)}}{2(8)}=\dfrac{3\pm\sqrt{233}}{16}\\\\x\approx \{-0.7665,1.1415\} \qquad\text{matches choice B}[/tex]
