Question

Resolva:

A) X^2-2x+3=0
B)4x^2+x-1=0

Answer 1

a)X^2-2x+3=0

coeficientes: a=1 b=-2 c=3

Aplicando Bhaskara

∆=b²-4ac

∆= -2²-4.3

∆=4-12

∆=-9

b)4x²+x-1=0

coeficientes: a=4 b=1 c=-1

Aplicando Bhaskara

∆=1²-4.4.(-1)

∆=1+16

∆=17

X=-b±√∆/2.a

X=-(-4)+√17/2.1

=4±√17/2