Question

Alguém sabe resolver?

Answer 1

Resposta:

2x²-7x+3=0

Δ=b²-4.a.c

Δ=7²-4.2.3

Δ=49-24

Δ=25

x=-b±√Δ

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2.a

x=-(-7)±√25

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2.2

x=7±5

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4

x1= 7+5 x1= 13/4 x2= 7-5 x2= 2/4 x2= 1/2

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4 4