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Mathematics, 02.03.2021 21:30 mem8163

Determina o valor de k para cada uma equações do 2º grau seguintes, tal que: a) x²+x+k = 0 não tenha soluções.
b) x²+kx+1 = 0 não tenha uma solução.
c) kx²+2x-4 = 0 tenha duas soluções.
d) -3x²+kx-3 = 0 tenha uma solução

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