Solve: 2x3 + 2x2 − 19x + 20 = 0

Question

anonymous · Answer

Real: No real number solutionsGlossarysolution 1. The value of a variable that makes an equation true. 2. In chemistry, a solution is a homogeneous mixture composed of only one phase.
Imag: x+1.1855+0.1402i,1.8863+5.7917i,171.7891+407.1911i

anonymous · Answer

soo..would it be nosolution then?

anonymous · Answer

x=1.5 and x=-4

mertsj · Answer

Did you use synthetic division to find the rational roots?

anonymous · Answer

em sure this is the answer

anonymous · Answer

okay. well thank you. ithought it was no solutione bc it didnt have any reeal numbers

mertsj · Answer

Since it is x^3 there should be 3 answers.

mertsj · Answer

and 1.5 is not an answer.

radar · Answer

Factor getting (x+4)(2x^2-6x +5)  This will give you the real solution of x=-4, now solve the quadratic and get the two complex solutions.

radar · Answer

Solve the quadratic using the quadratic equation
a=2, b=-6, and c=5

radar · Answer

$$6 \pm \sqrt{(-6)^{2}-4\times2\times5}\over 4$$