Question

Resolver equações do segundo grau, usando Bhaskara.

1) 3x²-27=0

2) x²-6x=0

Answer 1

Boa noite!

1)

Delta = b² - 4ac
Delta = 0² - 4.3.(-27)
Delta = 324

x = -b +- √Delta / 2a
x = 0 +- √324 / 2.3
x1 = 0 + 18 / 6
x1 = 3

x2 = 0 - 18 / 6
x2 = -3

S = {3; -3}




2)

Delta = (-6)² - 4.1.0
Delta = 36

x = -(-6) +- √36 / 2.1
x = 6 +- 6 / 2
x1 = 6+6/2
x1 = 6

x2 = 6-6/2
x2 = 0

S={6; 0}



Espero ter ajudado!

Answer 2

1) 3x²-27=0
a=3 b=0 c=-27

Δ=b²-4ac
Δ=0²-4.3.-27
Δ=324

x=-b±√Δ/2a

x'=-0+18/6
x'=3

x"=-18/6
x"=-3


2) x²-6x=0
a=1 b=-6 c=0

Δ=b²-4ac
Δ=-6²-4.1.0
Δ=36

x=-b±√Δ/2a

x'=+6+6/2
x'=12/2
x'=6

x"=+6-6/2
x"=0/2
x"=0