Question Details

In the following question, two quadratic equations labeled I and II are provided. Solve both equations to determine the relationship between x and y.



I. x2 - 7x - 260 = 0
II. y2 - 3y - 54 = 0

Options

A

If x > y

B

If x ≤ y

C

If x ≥ y

D

If x < y

E

If x = y or no relation can be established

Show Answer

Correct Answer :

Option E

If x = y or no relation can be established

Solution :

The correct option is If x = y or no relation can be established.

Step 1: Solve Equation I for x.

x2-7x-260=0

To factorize the equation, find two numbers whose product is -260 and sum is -7. These numbers are -20 and +13.

x2-20x+13x-260=0

x(x-20)+13(x-20)=0

(x-20)(x+13)=0

Hence, the values of x are:

x=20 or x=-13

Step 2: Solve Equation II for y.

y2-3y-54=0

To factorize the equation, find two numbers whose product is -54 and sum is -3. These numbers are -9 and +6.

y2-9y+6y-54=0

y(y-9)+6(y-9)=0

(y-9)(y+6)=0

Hence, the values of y are:

y=9 or y=-6

Step 3: Compare the values of x and y.
- For x=20 and y=9: x>y
- For x=20 and y=-6: x>y
- For x=-13 and y=9: x<y
- For x=-13 and y=-6: x<y

Since in some cases x>y and in other cases x<y, no relation can be established between x and y.

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