RRB NTPC · Question 53
Simplify: (2x)^2 - (2y)^2 - (4x)^2
Show answer & explanation
Answer: (C) -12x^2 - 4y^2
Explanation
(2x)² − (2y)² − (4x)² = 4x² − 4y² − 16x² = −12x² − 4y².
Railways PYQCBT 2 2017
RRB NTPC · Question 53
Answer: (C) -12x^2 - 4y^2
(2x)² − (2y)² − (4x)² = 4x² − 4y² − 16x² = −12x² − 4y².