In the following question, one or two equation(s) is/are given. You have to solve both the equations and find the relation between ‘x’ and ‘y’ and mark correct answer.
I. x2 – 19x + 84 = 0
II. y2 – 25y + 126 = 0
Solution
Correct Answer: Option D
We will solve both the equations separately.
Equation I:
x2 – 19x + 84 = 0
⇒ x2 – 12x – 7x + 84 = 0
⇒ (x – 12) (x – 7) = 0
⇒ x = 12 or x = 7
Equation II:
y2 – 25y + 126 = 0
⇒ y2 – 18y – 7y + 126 = 0
⇒ (y – 18) (y – 7) = 0
⇒ y = 18 or y = 7
So, the relation cannot be determined
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