Answer:
16
Step-by-step explanation:
The quadratic equation –3 = –x2 + 2x must first be rewritten in standard form:
x^2 - 2x - 3 = 0
or:
1x^2 - 2x - 3 = 0
The coefficients a, b and c are thus {1, -2, -3}, and therefore the discriminant, b^2 - 4ac, is
(-2)^2 - 4(1)(-3), or 4 + 12 = 16
