Question

factorise the following ( please answer asap )

${x}^{2} - {y}^{2} - 2y - 1$
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Answer 1

Step-by-step explanation:

HII

x^2-y^2-2y-1

x^2-(y^2+2y+1)

=x^2-(y^2+2•y• 1+1^2)

=x^2-(y+1)^2

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

=[x+y +1][x-y-1]

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