Question

Calcule equação do 2 grau usando delta

a) ײ-5×+6=0


b) ײ-8×+12=0


c) ײ+2×-8=0



d) ײ+×+12=0

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Answer 1

Resposta:

a)x²-5×+6=0

∆=b²-4.a.c

∆=25-24

[∆=1]

x= -(-5)±√1

________

2.1

x' = 5+1 = 6 = 3

____________

2 2

x'' = 5-1 = 4 = 2

____________

2 2