factorize x² + a²-1/a x-1
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Step-by-step explanation:
(x^2 +( a^2 --1) /a ) x--1
=a^2 /a --1/a = (a --1/a)
=x^2 + ( a--1/a) x- -1
=x^2 +ax -- x/a --1
=x(x+a)-(x/a +1)
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