Try any number, this equation will obiously always end with x=x
clearly every integer is a solution. so i'll assume that let and where then is a solution if and only if:
so hence thus we must have the converse is obviously true, i.e. if then
now, from quadratic formula it's clear that if and only if thus so the general solution of
your equation is:
by the way questions of this type have nothing to do with calculus and they should be posted in high school pre-algebra subforum.
1) Hello NonCommAlg and thanks, so i dont understand why is a solution if and only if: ? Thanks
2) I'm seeing that so Mr NonCommAlg we can use the same proof that ? look here ==> http://www.mathhelpforum.com/math-he...equations.html