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Simplify the following expression.
Question

Simplify the following expression.

A.


B.


C.


D.


Correct option is D

Given:  
x22x63x2+14x+49\frac{x^2 -2x-63}{x^2+14x+49} 
Formula Used: 
x2y2=(x+y)(xy)x^2 -y^2 = (x+y)(x-y)
Solution:

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