Question

решите уравнения 
1)5x^2=x
2)1.6x^2=3x
6)x=x^2

Answer 1

1)5x^2=x
 5x^2-x=0
  x(5x-1)=0
  x=0  или 5x-1=0
 x=0         x=15
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1.6x^2=3x
1.6x^2-3x=0
x(1.6x-3)=0
x=0 или 1.6x-3=0
x=0 или x= 31,6
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x=x^2
x-x^2=0
x(1-x)=0
x=0  или x=1
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