andytran5451
andytran5451
09-04-2018
Mathematics
contestada
how many solution does x^2=4x-5 have
Respuesta :
mkryukova19
mkryukova19
09-04-2018
x^2-4x+5=0
D= b²-4ac=16-4*5*1=16-20=-4
so no real solutions, because D<0
and it is going to be only 2 imaginary solutions
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