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1 What must be subtracted from 9xy + 3xy? +4x – By+3 to get 9xy - xy +3x-2y+6
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2
Answer:
Step-by-step explanation:
Let the polynomial to be subtracted be M
According to question,
2x
3
−3x
2
y+2xy
2
+3y
3
−M=x
3
−2x
2
y+3xy
2
+4y
3
⇒M=(2x
3
−3x
2
y+2xy
2
+3y
3
)−(x
3
−2x
2
y+3xy
2
+4y
3
)
⇒M=2x
3
−3x
2
y+2xy
2
+3y
3
−x
3
+2x
2
y−3xy
2
−4y
3
Collecting like terms,
⇒M=2x
3
−x
3
−3x
2
y+2x
2
y+2xy
2
−3xy
2
+3y
3
−4y
3
⇒M=x
3
−x
2
y−xy
2
−y
3
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