Question

If = 2 and

2 +

2 + 3 = −5, then find y.

(a) -2 (b) 3 (c) -4 (d) 9​

Answer 1

Answer:

Pick out all the adjectives in these sentences and write to which type each of them belongs.

1. I have called you several times.

2. Several persons were present at the accident site.

3. Which pen do you prefer?

4. The child fell from a great height.

5. My aunt lives in the next lane.

6. The soldier died a heroic death.

7. Neither party is in the right.

8. A bird in the hand is better than two in the bush.

9. He comes here every day.

10. The ship suffered heavy damage. lots

Answer 2

Step-by-step explanation:

Given : If x = -2 and x^2 + y^2 + 3xy = -5x

2

+y

2

+3xy=−5 .

To find : The value of y ?

Solution :

The equation is x^2 + y^2 + 3xy = -5x

2

+y

2

+3xy=−5 .

Substitute x=-2 in the equation,

(-2)^2 + y^2 + 3(-2)y = -5(−2)

2

+y

2

+3(−2)y=−5

4+ y^2 -6y = -54+y

2

−6y=−5

y^2 -6y +9=0y

2

−6y+9=0

y^2-3y-3y+9=0y

2

−3y−3y+9=0

y(y-3)-3(y-3)=0y(y−3)−3(y−3)=0

(y-3)(y-3)=0(y−3)(y−3)=0

(y-3)^2=0(y−3)

2

=0

y-3=0y−3=0

y=3y=3

Therefore, the value of y is 3.

So, Option b is correct.