What is the value of the discriminant for the quadratic equation - 3 = - x2 + 2x?

Answer: - 1 or + 3

Step-by-step explanation:

Quadratic equation

-3 = - x2+2x

Collect like terms

X2-2x-3=0

Factorise

Values of - 3x = - 3x & + x or + 3x & - x

So will go with - 3x & + x

Substitute

X2-3x+x-3=0

X (x-3) + 1 (x-3) = 0

(X+1) (x-3) = 0

X+1=0

X = - 1 or

X-3=0

X = + 3

Therefore, X = - 1 or + 3