From the sum of 3x – y 11 and –y -11, subtract 3x – y- 11
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Answer:
Let z be the quantity being subtracted.
∴−
3
2
x
2
+
2
3
xy+2y
2
−z=3x
2
−2xy−
2
7
y
∴z=−(3x
2
−2xy−
2
7
y)−
3
2
x
2
+
2
3
xy+2y
2
∴z=−
3
11
x
2
+
2
7
xy+2y
2
+
2
7
y
Hence, the quantity to be subtracted is −
3
11
x
2
+
2
7
xy+2y
2
+
2
7
y.
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