Question Details

Directions (41-45): In each of these questions, two equations (I) and (II) are given. Solve the equations and mark the correct option.


I: 2x2 + 10x + 12 = 0
II: y2 + 10x + 25 = 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 find the relationship between x and y, we need to solve both given equations step-by-step.


Step 1: Solve Equation I for x

The first equation is:

2x2+10x+12=0

Divide the entire equation by 2 to simplify:

x2+5x+6=0

Factorize the quadratic equation by finding two numbers that multiply to 6 and add up to 5 (which are 2 and 3):

(x+2)(x+3)=0

Solving for x:

x=-2 or x=-3


Step 2: Solve Equation II for y

The second equation is:

y2+10y+25=0

This is a perfect square quadratic equation:

(y+5)2=0

Solving for y:

y=-5


Step 3: Compare the values of x and y

Comparing the values of x (-2 and -3) with y (-5):

1. When x=-2 and y=-5, -2>-5 (so x>y).

2. When x=-3 and y=-5, -3>-5 (so x>y).


Therefore, in both cases, x>y.

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