Subtracting x 2 - y 2 + z2 from x2 - y 2 - z 2 , the resultant expression is _______ (2x 2 ,2y 2 , -2z 2 ,૦)
help me please
Answers
Answered by
11
Answer:
2z
Step-by-step explanation:
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Answered by
0
Answer:
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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