Write a function named QE with arguments aa, bb, cc that solves the quadratic equation ax^2 +bx+c=0 and returns the roots as a two-element vector of real or complex numbers. The arguments aa, bb, and cc are the coefficients of the quadratic equation. Tes you qe function with the R commands given below.

>qe(1,1,1)

>qe(1,2,1)

>qe(1,3,1)

Please write the answer as it would be inputted into R