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The product of two numbers is 120. The sum of their squares is 289 The sum of the two numbers is:
Question 1:
The product of two numbers is 120. The sum of their squares is 289 The sum of the two numbers is:
A.
20
B.
23
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Numbers be a and b.
=> (a + b)^2 = (a^2 + b^2) + 2ab
= 289+2 × 120 = 289 + 240 = 529
=> a+b = √529 = 23
C.
169
D.
None of these
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