Respostas

2013-09-12T18:03:23-03:00
<!-- @page { margin: 2cm } P { margin-bottom: 0.21cm } --> a)(7p-35)+8i
7p-35=0
35=7p
p=35/7=5 p=5

b)-2+(-3p^2+48)i
 -3p^2+48=0
-48=-3p^2
 p^2=-48/-3=16 = raiz quadrada de 16=4 p=4

c)(p^2-4)i
 p^2-4=0
4=p^2 p^2=raiz quadrada de 4 = p=2
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