Question

x²-3y-4=0 ( Preciso do Baskhara )

Answer 1

Δ = b² + 4ac
Δ = 9 + 16
Δ = 25

Baskhara ⇒
-b +- √Δ        3 +- 5  
-----------  ⇒  --------- = 4 ou -1
     2a                2

Answer 2

X² -3y -4=0
a= 1; b= -3; c= -4
∆ = b² - 4.a.c
∆ = (-3)² - 4.(1).(-4)
∆ = 9 +16
∆ = 25
x = -b ± √∆) / 2.a
x = - (-3)± √25/ 2.(1)
x = 3 ± 5/2

x'= 3+5/ 2= 8/2
x'= 4

x"= 3 - 5/ 2
x"= - 2/2
x"= - 1