Respostas

2013-08-12T12:28:35-03:00
Resolvendo baskara:
∆= b²-4.a.c
∆= 10² -4(4)(4)
∆= 36

x= (-b+-V 
∆)/2.a
x=(4+-V36)/2.4 
x= (4+-6)/2
x'= 10/8 --> x'= 5/4
x''= -2/8 ----> x''= -1/4

:)
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