M + ( 5X2 – 2XY ) = 6X2+ 9XY – Y2B
Bài 27:Tìm đa tức M , biết:
a.M + ( 5x
2
– 2xy ) = 6x
2
+ 9xy – y
2
b.M – (3xy – 4y
2
) = x
2
-7xy + 8y
2
c.(25x
2
y – 13 xy
2
+ y
3
) – M = 11x
2
y – 2y
2
;
d.M + ( 12x
4
– 15x
2
y + 2xy
2
+7 ) = 0
Bài 27:Tìm đa tức M , biết:
a.M + ( 5x
2
– 2xy ) = 6x
2
+ 9xy – y
2
b.M – (3xy – 4y
2
) = x
2
-7xy + 8y
2
c.(25x
2
y – 13 xy
2
+ y
3
) – M = 11x
2
y – 2y
2
;
d.M + ( 12x
4
– 15x
2
y + 2xy
2
+7 ) = 0