Delhi Police Constable Exam Model Paper 9

Question : 78 of 100

Marks: +1, -0

Sum of square of two numbers is 74 and their product is 35, then the sum of both will be

Solution:

Tips & Tricks
Given:
Sum of square of two numbers = 74
Product of two number = 35
Formula:

(a + b)^2= a^2+ b^2+ 2ab

Calculation:

(a + b)^2= 74 + 2 × 35

⇒

(a + b)^2= 74 + 70

⇒

(a + b)^2= 144

⇒

a + b = √144

⇒

a + b = 12

Sum of square of two numbers is 12.

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