Question Details

In each question two equations number (I) and (II) are given. You should solve both the equations and mark appropriate answer.


I. x210x+24=0
II. 5y216y+12=0

Options

A

If x=y or no relation can be established

B

If x>y

C

If x<y

D

If x≥y

Show Answer

Correct Answer :

Option B

If x>y

If x>y

Solution :

The correct option is If x>y.

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

Step 1: Solve Equation I for x

The first equation is given as:
x210x+24=0

To solve this by factorization, we need to find two numbers that multiply to 24 and add up to -10. These numbers are -6 and -4.
By splitting the middle term, we get:
x26x4x+24=0

Factor out the common terms:
x(x6)4(x6)=0
(x4)(x6)=0

This gives the roots:
x=4 or x=6

Step 2: Solve Equation II for y

The second equation is given as:
5y216y+12=0

To factor this quadratic equation, we look for two numbers that multiply to 5×12=60 and add up to -16. These numbers are -10 and -6.
By splitting the middle term, we get:
5y210y6y+12=0

Factor out the common terms:
5y(y2)6(y2)=0
(5y6)(y2)=0

This gives the roots:
y=65=1.2 or y=2

Step 3: Compare the values of x and y

Let us compare each value of x with each value of y:
- Comparing x=4 with y=1.2 and y=2:
4>1.2 and 4>2 (so, x>y)
- Comparing x=6 with y=1.2 and y=2:
6>1.2 and 6>2 (so, x>y)

Since all values of x are strictly greater than all values of y, we conclude that x>y.

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