Question Details

Directions: 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 - 20x + 96 = 0
II. y2 - 3y - 28 = 0

Options

A

If x < y

B

If x ≤ y

C

If x > y

D

If x = y or no relation can be established between x and y.

E

If x ≥ y

Show Answer

Correct Answer :

Option C

If x > y

Solution :

Correct Answer: If x > y

To determine the relationship between x and y, we need to solve both given quadratic equations step-by-step.

Step 1: Solve Equation I for x

x2-20x+96=0

We need to find two numbers that multiply to give 96 and add up to give -20. These numbers are -12 and -8.

x2-12x-8x+96=0

x(x-12)-8(x-12)=0

(x-12)(x-8)=0

Therefore, the values of x are:

x=12 or x=8

Step 2: Solve Equation II for y

y2-3y-28=0

We need to find two numbers that multiply to give -28 and add up to give -3. These numbers are -7 and 4.

y2-7y+4y-28=0

y(y-7)+4(y-7)=0

(y-7)(y+4)=0

Therefore, the values of y are:

y=7 or y=-4

Step 3: Compare the values of x and y

Let's compare each value of x with each value of y:

- For x=12: 12>7 and 12>-4 (so x>y)
- For x=8: 8>7 and 8>-4 (so x>y)

In all cases, every value of x is strictly greater than every value of y.

Hence, the correct relationship is If x > y.

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