(1). 1-a^2+2ab-b^2(2). a^2-2ab+x^2+ 2xy-y^2
1 answer:
Answer:
Los términos anteriores se pueden escribir como,
( x
2
+2 x y+y
2
)-( un
2
+2 a b+B
2
)
Lo sabemos ( un+b )
2
=a
2
+2 a b+B
2
y ( un-b )
2
=a
2
-2 a b+B
2
( x
2
-( 2×X×y )+y
2
)-( un
2
+( 2×a×b )+B
2
)
( x-y )
2
-( un+b )
2
Lo sabemos , a
2
-B
2
=( un+b ) ( un-b )
[ ( x-y )+( un+b ) ] [ ( x-y )-( un+b ) ]
( x-y+a+b ) ( x-y-a-b )
Explanation:
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