Question

-X²+4x=0 Me Ajudem Por Favor ​

Answer 1

-X²+4x=0

a= -1/ b= 4/ c= 0

Δ = b² – 4ac

Δ = (4)² - 4 . (-1) . 0

Δ = 16 + 0

Δ = 16

x = – b ± √Δ / 2·a

x = - 4 ± √16 / 2 . (-1)

x = - 4 ± 4 / -2

x1 = - 4 + 4 / -2 = 0/-2 = 0

x2 = - 4 - 4 / -2 = -8/-2 = 4