Question

find the discriminant of 1-x=2x²​

Answer 1

Step-by-step explanation:

2x²-x-1=0

b²-4ac=0

(1)²-4(2)(-1)

1+8=9

Answer 2

Step-by-step explanation:

$2 {x}^{2} - x + 1 \\ \\ discriminant = {b}^{2} - 4ac \\ { - 1}^{2} - 4 \times 2 \times 1 \\ 1 - 8 \\ - 7$