Question

equação x²- 8x+ 12=0

Answer 1

x² -8x +12
Δ= b² -4ac
Δ= (-8)² -4.1.12
Δ= 64 - 48
Δ= 16

x= -b +/- √Δ / 2a
x= -(-8) +/- √16 / 2.1
x'= 8 +4 /2
x'= 12/2
x'= 6

x''= 8 -4 /2
x''= 4/2
x''= 2

Bons estudos!

Answer 2

Δ = (-8)² -4 · 1 · 12
Δ = 64 - 48
Δ = 16

X1 = 8 + √16 / 2·1
X1 = 8 + 4  / 2
X1 = 12 / 2
X1 = 6

X2 = 8 - 4 / 2
X2 = 4 / 2
X2 = 2