Question Details

Directions (56-60): In each of these questions, two equation (I) and (II) are given. You have to solve both the equations and give answer.


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

Show Answer

Correct Answer :

Option A

If x > y

Solution :

The correct option is If x > y.


Step 1: Solve Equation (I) for x

The given first equation is:

x2 20x + 96 = 0


We need to find two numbers whose product is 96 and whose sum is -20. These numbers are -12 and -8.

Splitting the middle term:

x2 12x 8x + 96 = 0

x(x12) 8(x12) = 0

(x12) (x8) = 0


Thus, the values of x are:

x=12 or x=8


Step 2: Solve Equation (II) for y

The given second equation is:

y2 3y 28 = 0


We need to find two numbers whose product is -28 and whose sum is -3. These numbers are -7 and +4.

Splitting the middle term:

y2 7y + 4y 28 = 0

y(y7) + 4(y7) = 0

(y7) (y+4) = 0


Thus, the values of y are:

y=7 or y=4


Step 3: Compare the values of x and y

Comparing every value of x with every value of y:
- For x = 12: 12 > 7 and 12 > -4
- For x = 8: 8 > 7 and 8 > -4

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


Therefore, x > y.

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