Question

73) sem resolver as equaçoes determine quais tem raizes reais.
a)4.(x2+2)=8.(x+1)

b)x2-3.(x-15)=-4-3x

c)3x.(x-1)=2x

d)-6x2+12=0

e)-8x2-32=16

f)11x2=0

Answer 1

a verdadeira e letra d pq tem raiz real