Question Details

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


I. 2x29x+10=0
II. y212y+35=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 C

If x<y

If x<y

Solution :

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

Step 1: Solve Equation I for x
Equation I is given by:
2x29x+10=0

We can solve this quadratic equation using factorization. We need to find two numbers that multiply to 2×10=20 and add up to 9. These numbers are 4 and 5.
Rewriting the middle term:
2x24x5x+10=0

Now, we group the terms and factor them:
2x(x2)5(x2)=0
(2x5)(x2)=0

Thus, the roots for equation I are:
2x5=0x=2.5
and
x2=0x=2

So, the values of x are 2 and 2.5.

Step 2: Solve Equation II for y
Equation II is given by:
y212y+35=0

We need to find two numbers that multiply to 35 and add up to 12. These numbers are 5 and 7.
Rewriting the middle term:
y25y7y+35=0

Now, group the terms and factor:
y(y5)7(y5)=0
(y7)(y5)=0

Thus, the roots for equation II are:
y7=0y=7
and
y5=0y=5

So, the values of y are 5 and 7.

Step 3: Compare the values of x and y
We have:
x={2,2.5}
y={5,7}

Comparing each value of x with each value of y:
- For x=2, both y=5 and y=7 are greater (i.e., x<y).
- For x=2.5, both y=5 and y=7 are greater (i.e., x<y).

Therefore, we can conclude that x<y is always true.

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