ashuwayhat4054 ashuwayhat4054
  • 14-09-2019
  • Mathematics
contestada

Prove that if n is a perfect square, then n+1 can never be a perfect square

Respuesta :

AlonsoDehner AlonsoDehner
  • 20-09-2019

Answer:

Proved

Step-by-step explanation:

To prove that if n is a perfect square, then n+1 can never be a perfect square

Let n be a perfect square

[tex]n=x^2[/tex]

Let [tex]n+1 = y^2[/tex]

Subtract to get

[tex]1 = y^2-x^2 =(y+x)(y-x)[/tex]

Solution is y+x=y-x=1

This gives x=0

So only 0 and 1 are consecutive integers which are perfect squares

No other integer satisfies y+x=y-x=1

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