Question

x²-2√5x+3... factorize.. solve it

Answer 1

=x²-2√5x+3
=x²-2√5x+5-2
={(x)²-2(x)(√5)+(√5)²}-2                   {(a-b)²=(a²-2ab+b²)}
=(x-√5)²-(√2)²                                     {a²-b²=(a+b)(a-b)}
=(x-√5+√2)(x-√5-√2)         
                            ITS DONE ;-)