Question

factorise


x^2-1-2y-y^2​

Answer 1

Step-by-step explanation:

x² - 1 - 2y - y²

= x² - y² - 2y - 1

= x² - ( y² + 2y + 1 )

= x² - ( y + 1 )²

= [ x + ( y + 1 ) ] × [ x - ( y + 1 ) ]

= [ x + y + 1 ] × [ x - y - 1 ]

Hope it helps

Answer 2

$\star\:\:\:\bf\large\underline\blue{Question:–x²-1-2y-y²}$

$\star\:\:\:\bf\large\underline\red{Answer:–(x+y+1)(x-y-1)}$

$\orange{\bold{\underline{\underline{Step–by–step\: explanation}}}}$

x²-1-2y-y²

=x²-y²-2y-1

=x²-(y²+2y+1)

=x²-(y+1)²

=(x+y+1)(x-y-1)

$\pink{\bold{\underline{\underline{Hope\:it\:helps\:you\:mate}}}}$