9- x² + 2xy - y² factorise it
Answers
Answered by
2
Step-by-step explanation:
SOLUTION ✍️
_____________________
x2 - 2xy - y2 + 9 =
-1 • (x2 + 2xy + y2 - 9)
Final result :
-x2 - 2xy - y2 +
hope this helps you!!
Answered by
0
Answer:
−x
2
+2xy−y
2
9−x
2
+2xy−y
2
Above terms can be written as ,
9−x
2
+xy+xy−y
2
Now,
9−x
2
+xy+3x−3x+3y−3y+xy−y
2
Rearranging the above terms , we get,
9−3x+3y+3x−x
2
+xy+xy−3y−y
2
Take out common in all terms ,
3(3−x+y)+x(3−x+y)+y(−3−y+x)
3(3−x+y)+x(3−x+y)−y(−3−y+x)
(3−x+y)(3+x−y)
Step-by-step explanation:
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