Question

2x²-8x-24=0 quero as resposta completa do delta pra agora

Answer 1

2x² - 8x - 24 = 0

a = 2
b = - 8
c = - 24

Δ = b² - 4.a.c

Δ = (-8)² - 4. 2 . ( - 24)

Δ = 64 + 192

Δ = 256

x =  - b +- √Δ / 2a

x = - (- 8 ) + - √256/ 2.2

x = + 8 + - 16 / 4

x' = + 8 + 16 / 4 ⇒ x' = 24/ 4 ⇒ x' = 6

x" = + 8 - 16 / 4 ⇒ x" = - 8/4 ⇒ x" = - 2

Answer 2

Olá

2x²-8x-24=0

a = 2

b = - 8

c = - 24

Δ = b² - 4.a.c

Δ = (-8)² - 4. 2 . ( - 24)

Δ = 64 + 192

Δ = 256

x = - b +- √Δ / 2a

x = - (- 8 ) + - √256/ 2.2

x = + 8 + - 16 / 4

x' = + 8 + 16 / 4 ⇒ x' = 24/ 4 ⇒ x' = 6

x" = + 8 - 16 / 4 ⇒

x" = - 8/4 ⇒ x" = - 2

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