List the four smallest elements of the set. {y|y = x2 − 5, x  integers}

Sagot :

[tex]\left \{ y|y = x^{2} - 5\ , x \ integers \right \} \\\\x=0, \ \to \ y=0^2-5=-5 \\ point : \ (0,-5)\\\\x=-1, \ \to \ y= (-1)^2-5=1-5=-4 \\ point : \ (-1,-4) \\\\x=-2, \ \to \ y= (-2)^2-5=4-5=-1 \\ point : \ (-2,-1) \\\\x= 1, \ \to \ y= 1^2-5=1-5=-4 \\ point : \ ( 1,-4) \\\\Answer : \ (0,-5) , \ (-1,-4), \ (-2,-1), \ (1,-4) [/tex]
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