Question

f(x)=-x^2+2x+24 va rog frumos imi trebuie repedeeee​

Answer 1

-x^2+2x+24=0

d= b^2-4ac = 2^2-4×(-x)+24= 4+96=100

$x1 = \frac{ - b - d}{2a} = \frac{ - 2 - 10}{ - 2} = 6 \\ x2 = \frac{ - b + d}{2a} = \frac{ - 2 + 10 }{ - 2} = - 4$