Question

Subtracting x 2 - y 2 + z2 from x2 - y 2 - z 2 , the resultant expression is _______ (2x 2 ,2y 2 , -2z 2 ,૦)

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Answer 1

Answer:

2z

Step-by-step explanation:

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Answer 2

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.