January 2020 1 53 Report
Resolva as equações de 2 grau:

a)4x²+40=0
b)9x²=18
c)x²=144
d)2x²-3=0
e)7x²-x=0
f)-5x²-10x=0
g)4x²=8x
h)x²-x=0
i)x.(x-3)-2.(x-3)=6
j)x²+(x-6)=0

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