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. x2 7x 60 = 0

II. y2 + 13y + 40 = 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

Solution :

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

Step 1: Solve Equation I for x
The first equation is:
x2 7x 60 = 0
We need to find two numbers that multiply to 60 and add up to 7. These numbers are 12 and 5.
So, we can factor the equation as:
(x12) (x+5) = 0
This gives the roots:
x = 12 or x=5

Step 2: Solve Equation II for y
The second equation is:
y2 + 13y + 40 = 0
We need to find two numbers that multiply to 40 and add up to 13. These numbers are 8 and 5.
So, we can factor the equation as:
(y+8) (y+5) = 0
This gives the roots:
y = 8 or y=5

Step 3: Compare the values of x and y
Let's compare each value of x with the values of y:
- For x=12:
12>8 and 12>5, so x>y.
- For x=5:
5>8 (so x>y) and 5=5 (so x=y).

Combining these observations, we find that in all cases, x is either greater than or equal to y.
Therefore, the correct relationship is:
x y

Unlock Our Free Library

Access expert-curated educational resources and study materials—completely free.

Discover more resources

You may also like

Mock Tests

View All
  • CTET
  • intermediate
  • No time limit
  • child development and pedagogy, mathematics, social science

  • SSC
  • intermediate
  • 2 hours and 30 mins
  • child development and pedagogy, mathematics, social science

Ask AI Tutor
5 left
Q1 View Question & Options
AI Tutor is solving this question...
Reading question context & options...