Question

Equação 2° grau completa.

resolva:

1)a)x²-9x+8=0
b)9x²-24x+16=0
c)x²-x+4=0
d)3x²-15x+12=0
e)10x²+72x-64=0
f)x²-10x+25=0
g)x²-x-20=0
h)x²-3x-4=0

Equação 2° grau incompleta

resolva:

2)a)x²-49=0
b)x²=0
c)2x²-50=0
d)7x²-7=0
e)5x²-15=0
f)21=7x²
g)5x²+20=0
h)7x²+2=0​

Answer 1

Resposta:

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