is this true, not true, sometimes true when x=4, always true except when x=4 11/10/2013 | Jessica from Palmyra, IN | 1 Answer | 0 Votes Mark favorite Subscribe Comment
x^{2}-16/x-4=x+4 factor the top of the fraction ----> (x+4)(x-4)/x-4=x+4 the (x-4) terms cancel so we have x+4 = x+4 This is always true. 11/10/2013 | John M. Comment