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Bogdan [553]
3 years ago
8

Factorise x^2-y^2-2x+6y-8

Mathematics
1 answer:
Talja [164]3 years ago
3 0
X^2 - y^2 - 2x + 6y - 8 
<span>= (x^2 - 2x + 1) - (y^2 - 6y + 9) - 8 - 1 + 9 </span>
<span>= (x - 1)^2 - (y - 3)^2 </span>
<span>= [(x - 1) - (y - 3) ] [(x - 1) + (y - 3)] </span>
<span>= (x - 1 - y + 3) ( x - 1 + y - 3) </span>
<span>= (x - y + 2) (x + y - 4)</span>
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