Question Details

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


I. 4x216x+16=0
II. 10y229y+21=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 between x and y

Show Answer

Correct Answer :

Option A

If x > y

Solution :

The correct answer is If x > y.


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


Step 1: Solve Equation (I) for x:

4x216x+16=0

Divide the entire equation by 4 to simplify:

x24x+4=0

This is a perfect square trinomial:

(x2)2=0

x=2

So, the value of x is 2.


Step 2: Solve Equation (II) for y:

10y229y+21=0

We need two numbers that multiply to 10×21=210 and add up to 29. These numbers are 14 and 15.

Split the middle term:

10y215y14y+21=0

Factor by grouping:

5y(2y3)7(2y3)=0

(2y3)(5y7)=0

Thus, the roots are:

y=32=1.5

or

y=75=1.4


Step 3: Compare the values of x and y:

Value of x=2

Values of y=1.5,1.4

Comparing x with both values of y:

2>1.5

2>1.4


In both cases, x>y.

Therefore, the correct relationship is If x > y.

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