Question

5) Usando a fórmula de Bhaskara, determine as raízes em cada caso:
a) x²-x-56 = 0
b) 12x²- 6x = 0​

Answer 1

Resposta:

a) ∆= (-1)²-4.1.(-56)= 1+224= 225

x'= (-(-1)+√225)/2.1= 1+15=16/2=8.

x"= -7.

b) ∆= (-6)²= 36

x'= -(-6)+√36= 6+6=12/2= 6.

x"= 6-6=0.

Answer 2

a) Δ = (-1)?-4.1.(-56)= 1+224= 225

x'= (-(-1)+/225)/2.1= 1+15=16/2=8

x"= -7

b) Δ = (-6)²= 36

x'= -(-6)+v36= 6+6=12/2 = 6

x"= 6-6-0