Question

d) 5x²-10x=0 e) 9x²=54x alguém me ajuda​

Answer 1

∆ = b² - 4.a.c

x = -b ± √∆/2a

d) 5x² - 10x

∆ = 100 - 0

∆ = 100

x = 10 ± 10/10

x1 = 10 + 10/10 = 2

x2 = 10 - 10/10 = 0

e) 9x² - 54x

∆ = 2916 - 0

∆ = 2916

x = 54 ± 54/18

x1 = 54 + 54/18 = 6

x2 = 54 - 54/18 = 0