RRB NTPC · Question 29
(x^2 - y^2)/(x - y) =? A. x - y B. x + y C. xy D. 2xy
Show answer & explanation
Answer: (C) B
Explanation
x² − y² = (x − y)(x + y). Dividing by (x − y) leaves x + y.
Railways PYQCBT 1 2016
RRB NTPC · Question 29
Answer: (C) B
x² − y² = (x − y)(x + y). Dividing by (x − y) leaves x + y.