Question

Resultado de:
y=x²-2x-3

Answer 1

y=x²-2x-3
x²-2x-3 = 0

a= 1
b=-2
c= -3
Δ= b² -4ac

x= -b +-√Δ/2a

x1 =-1
x2= 3

vertices ( -b/2a ; -Δ/4a) = ( -(-2)2/2*1 ; -28/4*1) = (2; -7)