Question

factorise, x²+x+1, please tell me

Answer 1

x^2+x+1=0.  x^2 +2×x×1/2+1/4 =1/4–1.  (x+1/2)^2 =- 3/4.  ( x + 1/2 )^2 = ( 3×i^2)/4.  ( x + 1/2 ) = +/-(i/2).3^1/2.  x = -1/2 +/-(i/2). 3^1/2.  x = ( - 1 +/- i. 3^1/2 ) / 2. , Answer.