Question

-3x ao quadrado -5x+4=0?Me ajudem

Answer 1

-3x²-5x+4
a= -3
b= -5
c= 4

∆= b²-4ac
∆= 5+48
∆= 52

X= -b±√∆
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2a

X= 5±√52
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2.3

x¹= 5+7,21 = 7,16 = 1,21
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6 6

x²= 5-7,21 = 7,16 = 1,19
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6 6

S= {1.19 , 1.21}