Question

Resolva as equações INCOMPLETAS abaixo:
a) 7x²+49x=0
b) 81x²-1=0
C) 12x²+30x=6(x²+3x)
d) (x+3)²=6x​

Answer 1

Resposta:

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Answer 2

Resposta:

a) x=0,x=-7

b) x=1/9, x=-1/9

C) x=0,x=-2

d)x=3i, x=-3i