Answer:
25
Step-by-step explanation:
In this equation, ax^2+bx+c, b = -1, a = 2, and c = -3. Solving, (-1)^2 - 4(2)(-3) = 1 - (-24), or 25.
y = 2x² - x - 3
A = 2 , B = -1 , C = -3
B² - 4AC
(-1)² - 4(2)(-3)
1 + 24
