d < 0
else { Console . Write ( " Roots ▁ are ▁ complex ▁ STRNEWLINE " ) ; Console . Write ( - ( double ) b / ( 2 * a ) + " ▁ + ▁ i " + sqrt_val + " STRNEWLINE " + - ( double ) b / ( 2 * a ) + " ▁ - ▁ i " + sqrt_val ) ; } }