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The difference of squares of two consecutive odd numbers is 56. What is the sum of the two numbers?
Question

The difference of squares of two consecutive odd numbers is 56. What is the sum of the two numbers?

A.

22

B.

20

C.

18

D.

28

Correct option is D

Given:
The difference of squares of two consecutive odd numbers is 56.
Formula Used:
a2b2=(ab)×(a+b)a^2 - b^2 = (a - b) × (a + b)​​
Solution:
Let the two consecutive odd numbers be x and x + 2.
(x+2)2x2(x + 2)^2 - x^2​ = 56
Apply the algebraic identity.
(x + 2 - x) × (x + 2 + x) = 56
2 × (2x + 2) = 56
2x + 2 = 28
The sum of the two numbers is exactly x + (x + 2) = 2x + 2.
Therefore, the sum of the two numbers is 28.
Final Answer
So the correct answer is (d)

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