Question

Use the quadratic formula to find the zeros of the function y = 2x2 + 3x + 6. Round to the nearest tenth if necessary.
A. {-1.7, 2.3}
B. {-2.4, 2.4}
C. {-2.3, 0.8}
D. no real solution

Answer 1

No real solution. The quadratic formula would lead to:
\[\Large \frac{{ - 3 \pm \sqrt { - 39} }}{4}\]So there are only complex roots.

Answer 2

complex roots

Answer 3

\[(-3\pm39i)/4\]

Answer 4

\[(-3 \pm j39)/4\]

Answer 5

So, the answer is D because the roots are imaginary (not real).

Answer 6

well, actually the answer is a complex number, so it has a real part and an imaginary part

Answer 7

Sorry. I did not draw that level of distinction.