Question

Разложите на множители (СРОЧНО)

Answer 1

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Answer 2

$=x( x^{2} - y^{2} )=x(x-y)(x+y)$
$= ( \sqrt{2} x+ \sqrt{2}y )^{2}$
$= (y^{2}-9)( y^{2}+9 ) = (y-3)(y+3)( y^{2}+9 )$
$=(x+2)( x^{2} - 2x +4)$
$=(y+2-3)(y+2+3)=(y-1)(y+5)$