Directions (42-46) : In each question two equations numbered (I) and (II) are given. You have to solve both the equations and mark appropriate answer.
x2-21x+108=0
y2-14y+48=0
Correct Answer :
If x<y
Solution :
The correct option is If x>y.
Step 1: Solve Equation I for x
We split the middle term to factorize the equation. We find two factors of 108 whose sum is -21, which are -9 and -12:
Thus, the roots for x are:
or
Step 2: Solve Equation II for y
We find two factors of 48 whose sum is -14, which are -6 and -8:
Thus, the roots for y are:
or
Step 3: Compare the values of x and y
Comparing each value of x with every value of y:
- For : and
- For : and
In all cases, every root of x is strictly greater than every root of y.
Hence, the relation between x and y is x > y.
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