Question

WHAT IS THE SOLUTION to 2x^2+x+2=0?

Answer 1

by adding them both together.

Answer 2

umm, hello?

Answer 3

it has imaginary roots

Answer 4

\[x=-0.25\pm 0.968i\]

Answer 5

For this problem, you should use the quadratic formula
see
http://www.khanacademy.org/math/trigonometry/polynomial_and_rational/quad_formula_tutorial/v/using-the-quadratic-formula

for how to do it. You will get a minus number inside a square root, which means a complex number.

Answer 6

isn't the answer x=-1+isqrt15/2?

Answer 7

almost, the bottom should be 2*a = 4

\[ x= \frac{-1 ± \sqrt{15} \ i}{4} \]