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GenilzaAguiar
@GenilzaAguiar
November 2019
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Resolva as equações de 2° grau:
a) x²+4x+4=0
b) x²+8x+16=0
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exalunosp
A
x² + 4x + 4
trinômio quadrado perfeito. Acha as raizes aplicando quadrado da soma
[ V(x² ) + V(4) ]² = ( x + 2 )²
x + 2 = 0
x = - 2*****resposta
b
x² + 8x + 16 = 0
idem acima a
[ (Vx² + V( 16) ] ² = ( x + 4)²
x + 4 = 0
x = - 4 **** resposta
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x² + 4x + 4
trinômio quadrado perfeito. Acha as raizes aplicando quadrado da soma
[ V(x² ) + V(4) ]² = ( x + 2 )²
x + 2 = 0
x = - 2*****resposta
b
x² + 8x + 16 = 0
idem acima a
[ (Vx² + V( 16) ] ² = ( x + 4)²
x + 4 = 0
x = - 4 **** resposta