Question Details

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

I.  x 2 32 x + 112 = 0
II.  y 2 7 y + 12 = 0

Options

A

x ≥ y

B

x ≤ y

C

x > y

D

x < y

E

x = y or no relation

Show Answer

Correct Answer :

Option A

x ≥ y

x ≥ y

Solution :

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

Step 1: Solve Equation I

The first equation is:

x232x+112=0

We can factorize this by finding two numbers that multiply to 112 and add up to -32. These numbers are -28 and -4.

x228x4x+112=0

x(x28)4(x28)=0

(x28)(x4)=0

Solving for x gives the roots:

x=28 or x=4

Step 2: Solve Equation II

The second equation is:

y27y+12=0

We can factorize this by finding two numbers that multiply to 12 and add up to -7. These numbers are -4 and -3.

y24y3y+12=0

y(y4)3(y4)=0

(y4)(y3)=0

Solving for y gives the roots:

y=4 or y=3

Step 3: Compare the values of x and y

Let's compare the roots:
- Comparing x=28 with y=4 and y=3: we see that x>y.
- Comparing x=4 with y=4: we see that x=y.
- Comparing x=4 with y=3: we see that x>y.

Combining these observations, we conclude that:

xy

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