Question

equação do 2 grau x² + 7x =0

Answer 1

x^2 + 7x = 0 
x* ( x +7) =0
x=0 V x+7=0
x=0 V x= -7

C.S. = { -7,0 }

Answer 2

Ola Ed

x² + 7x = 0

x*(x + 7) =  0

x1 = 0
x2 = -7 

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