Question

02)resolva as equações:

A)x²-121=0



B)x²-100=0



c)x²-12x=0




D)x²-13x=0


E)x²-20x=0


F)x²-17x=0

Answer 1

A)x²-121=0
x² = 121
x = √121
x = 11

B)x²-100=0
x² = 100
x = √100
x = 10

c)x²-12x=0
x(x - 12) = 0 (x' = 0)
x - 12 = 0
x = 12 (x'' = 12)

x = 0 ou 12.

D)x²-13x=0
x(x - 13) = 0 (x' = 0)
x - 13 = 0
x = 13
x = 0 ou 13.

E)x²-20x=0
x(x - 20) = 0 (x' = 0)
x - 20 = 0
x = 20
x = 0 ou 20.

F)x²-17x=0
x(x - 17) = 0 (x' = 0)
x - 17 = 0
x = 17
x = 0 ou 17.