Selesaikan akar-akar imaginer

Tukang Tanya
· 6 bulan yang lalu

Selesaikan akar-akar persamaan $x squared minus 4 x plus 5 equals 0$
Tukang Jawab
· 6 bulan yang lalu

$x equals fraction numerator negative b plus-or-minus square root of b squared minus 4 a c end root over denominator 2 a end fraction space space equals fraction numerator 4 plus-or-minus square root of 16 minus 20 end root over denominator 2 end fraction equals fraction numerator 4 plus-or-minus square root of negative 4 end root over denominator 2 end fraction equals 2 plus-or-minus i x subscript 1 equals 2 plus i space a t a u space x subscript 2 equals 2 minus i$