Question Details

Directions: Solve both equations and determine the relationship between x and y.

I. x2-11x+24=0
II. y2-3y+2=0

Options

A

If x < y

B

If x ≥ y

C

If x = y or the relationship cannot be determined

D

If x > y

E

If x ≤ y

Show Answer

Correct Answer :

Option D

If x > y

Solution :

The correct option is If x > y.

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

Step 1: Solve Equation I for x

The given equation is:

x2-11x+24=0

We factorize the quadratic expression by splitting the middle term -11x into two parts such that their sum is -11 and their product is 24. The numbers are -8 and -3:

x2-8x-3x+24=0

Factor out common terms from the pairs:

x(x-8)-3(x-8)=0

(x-8)(x-3)=0

Setting each factor to zero gives:

x-8=0x=8

x-3=0x=3

So, the roots for x are x=3 and x=8.

Step 2: Solve Equation II for y

The given equation is:

y2-3y+2=0

We split the middle term -3y into two parts such that their sum is -3 and their product is 2. The numbers are -2 and -1:

y2-2y-y+2=0

Factor out common terms from the pairs:

y(y-2)-1(y-2)=0

(y-2)(y-1)=0

Setting each factor to zero gives:

y-2=0y=2

y-1=0y=1

So, the roots for y are y=1 and y=2.

Step 3: Compare the values of x and y

Now, let us compare every calculated value of x with every value of y:

• For x=3 and y=1: 3>1 (x>y)

• For x=3 and y=2: 3>2 (x>y)

• For x=8 and y=1: 8>1 (x>y)

• For x=8 and y=2: 8>2 (x>y)

Since every value of x is strictly greater than every value of y, the final relationship is x>y.

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