Question 727151
Two solutions (x = -2 or x = 2)


{{{ drawing(500, 500, -10, 10, -10, 10,
 graph( 500, 500, -10, 10, -10, 10,0,x^2-4)

)}}}


Graph of {{{y = x^2-4}}} above


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One solution (x = -5)


{{{ drawing(500, 500, -10, 10, -10, 10,
 graph( 500, 500, -10, 10, -10, 10,0,(x+5)^2)

)}}}


Graph of {{{y = (x+5)^2}}} above


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No solutions 


{{{ drawing(500, 500, -10, 10, -10, 10,
 graph( 500, 500, -10, 10, -10, 10,0,(x+1)^2+4)

)}}}


Graph of {{{y = (x+1)^2+4}}} above