Question

factorise x squared minus y squared minus 2 Y - 1

Answer 1

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

          = x^2 - (y^2 + 2y + 1)

          = x^2 - (y+1)^2

We know that a^2 - b^2 = (a+b)(a-b)

         = (x + y + 1)(x - y - 1).


Hope this helps!

Answer 2

Hey mate!!!
Here's your answer...

See the attachment

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