(4x + 5y) (4x – 5y) = …………………….. A) x2 – 16y2 B)

1.	(4x + 5y) (4x – 5y) = …………………….. A) x2 – 16y2 B) 16x2 – y2 C) 16x – 25 D) 16x2 – 25y2
Answer» D) 16x² – 25y² Correct option is (D) 16x² – 25y² (4x + 5y) (4x – 5y) = \((4x)^2-(5y)^2\) = \(16x^2-25y^2\).

(4x + 5y) (4x – 5y) = …………………….. A) x2 – 16y2 B) 16x2 – y2 C) 16x – 25 D) 16x2 – 25y2

Answer»

D) 16x² – 25y²

Correct option is (D) 16x² – 25y²

(4x + 5y) (4x – 5y) = \((4x)^2-(5y)^2\)

= \(16x^2-25y^2\).