Q. 10) HOX DƏl(Simplify):-
{ x:+3y2)(5x?- $y2
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Answer:
ANSWER
5x
2
y−5x
2
+3yx
2
−3y
2
+x
2
−y
2
+8xy
2
−3y
2
=5x
2
y+3yx
2
+8xy
2
−5x
2
+x
2
−3y
2
−y
2
−3y
2
=(5x
2
y+3x
2
y)+8xy
2
−(5x
2
−x
3
)−(3y
2
+y
2
+3y
2
)
=8x
2
y+8xy
2
−4x
2
−7y
2
.
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