Respuesta :

[tex]x^2-r=0[/tex]

if x = 10 is a solution to the equation, then:

[tex]\begin{gathered} 10^2-r=0 \\ 100-r=0 \\ 100=r \end{gathered}[/tex]

If x = -10 was used, the result would be the same, then the solution is r = 100

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