° Assinale a única certa: • A equação incompleta em (b) está representada em:
a) 5x ^ 2 =2x ( )
b) 5x ^ 2 =-0 ( )
c) 5x ^ 2 =4 ( )
d) 5x ^ 2 - 2x + 1 =0 ( )



É PARA AMANHÃ!!!!!!!​
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