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. 2 x 2 3 x 14 = 0 II. y 2 + 16 y + 55 = 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 :

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


Step 1: Solve Equation I for x

The first equation is:

2x2-3x-14=0

We split the middle term -3x into two terms whose product is 2×(-14)=-28 and sum is -3. The numbers are -7 and 4.

2x2+4x-7x-14=0

2x(x+2)-7(x+2)=0

(2x-7)(x+2)=0

This gives the roots:

x=72=3.5 or x=-2


Step 2: Solve Equation II for y

The second equation is:

y2+16y+55=0

We split the middle term 16y into two terms whose product is 55 and sum is 16. The numbers are 11 and 5.

y2+11y+5y+55=0

y(y+11)+5(y+11)=0

(y+11)(y+5)=0

This gives the roots:

y=-11 or y=-5


Step 3: Compare values of x and y

Values of x: 3.5,-2

Values of y: -11,-5


Comparing each value of x with each value of y:

1. When x=3.5: 3.5>-11 and 3.5>-5

2. When x=-2: -2>-11 and -2>-5


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


Hence, the correct option is If x > y.

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