Question

X elevado a 2 - 8x + 12 =0

Answer 1

x² - 8x + 12 = 0
Δ = B² - 4ac
Δ = (-8)² - 4.1.12
Δ = 64 - 48
Δ = 16

x₁ = - b +√Δ = 8 + 4 = 12 = 6
         2a          2.1        2

x² = -b -√Δ = 8 - 4 = 4 =  2
          2a        2.1      2
S =6 ; 2

Answer 2

x²-8x+12=0
Δ=b²-4ac             Xv=-b/2.a=-8/2.1=-4
Δ=-8²-4.1.12        Yv=-Δ/4.a=16/4.1=4
Δ=64-48
Δ=16