Question

what should be added to 2×^2+xy+2y^2 to obtain 3×^2+5by​

Answer 1

Step-by-step explanation:

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.