Question

Resolva as equações usando a fórmula de BHASKARA.
a)2x²-9x+1=0
B)x²-5x-25=0
C)x²+4x=0
D)x²-x-2=0
E)x²-2x+3=0
F)2x²-8x+8=0
G)x²-4=0

Answer 1

Resposta:

a)2x2-9x+1=0

x=(9+-√81-4.2.1)/4

x=(9+-√73)/4

x=(9+√73)/4

ou

x=(9-√73)/4

b) x2-5x-25=0

x=(5+-√25-4.1.-25)/2

x=(5+-√125)/2

x=(5+-5√5)/2

x= (5+5√5)/2

ou

x=(5-5√5)/2