RRB Paramedical Staff Nurse Model Paper 3

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Question : 60 of 100

Marks: +1, -0

In each of these questions, two equation (I) and (II) are given. You have to solve both the equations and give answer

1 . x^{2}-19 x+84=0

II.

y^{2}-25 y+156=0

if x < y
if x > y
if x ≥ y
if x ≤ y

Solution:

1 .

x^{2}-19 x+84=0

x^{2}-7 x-12 x+84=0

(x-7)(x-12)=0

∴ x=7,12

II.

y^{2}-25 y+156=0

y^{2}-13 y-12 y+156=0

(y-13)(y-12)=0

⇒ y=13,12

∴ x ≤ y

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