Question

Resolver
4 X²-5 X-6=0

Answer 1

4 X²-5 X-6=0

Δ= (-5)^2 - 4.4.(-6)
 Δ= 25 + 96
 Δ= 121

x' = -(-5)+11 / 8
x' = 16 / 8
x' = 2

x" = -(-5)-11 / 8
x" = -6 / 8
x" = - 0,75

Answer 2

4x²-5x-6=0
Δ=-5²-4·4·(-6)
Δ=-25-4·24
Δ=-25-96
Δ=-121

X= -(-5)⁺₋√121
       -----------------
            2·4
 
X1=5⁺₋(-11)      16
    ------------  = ------=2
           8             8

X2=5-(-11)      16
      ----------= --------=2
            8           8

deu isso :3