factorise the following:
x^2-1-2y-y^2
its urgent
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Answered by
6
Hello dear
_______________________________
x² - 1 - 2y - y²
we need a formula which is ( a + b )² = a² + 2ab + b²
x² - ( 1 + 2y + y² )
= x² - ( 1 + y )² ( from formula )
={ x - ( 1 + y ) } { x + ( 1 + y ) }
= ( x - 1 - y ) ( x + 1 + y )
______________________________
_______________________________
x² - 1 - 2y - y²
we need a formula which is ( a + b )² = a² + 2ab + b²
x² - ( 1 + 2y + y² )
= x² - ( 1 + y )² ( from formula )
={ x - ( 1 + y ) } { x + ( 1 + y ) }
= ( x - 1 - y ) ( x + 1 + y )
______________________________
Answered by
0
x^2-1-2y-y^2
= 2x-1-6y
= 2x-1-6y
8BIT:
Sorry my brother was screwing with my account
The answer is wrong
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