Question

Determine o vértice xv e yv de
 X²+ X -2 =0  

Answer 1

Resposta:

Xv= -b/2.a

Xv= -1/2.1

Xv= -1/2

Xv= -0,5

Yv= -Δ/4.a

Δ= b² - 4.a.c

Δ= 1² - 4.1.(-2)

Δ= 1 + 8

Δ= 9

Yv= -9/4.1

Yv= -9/4

Yv= -2,25