Find:(6m + 7n) (6m – 7n) – InterviewSolution

1.	Find:(6m + 7n) (6m – 7n)
Answer» (6m + 7n) (6m -,7n) is in the form of (a + b) (a – b) . (a + b) (a – b) = a² – b², here a = 6m, b = 7n (6m + 7n) (6m – 7n) = (6m)² – (7n)² = 6m × 6m – 7n × 7n = 36m² – 49n²

Find:(6m + 7n) (6m – 7n)

Answer»

(6m + 7n) (6m -,7n) is in the form of

(a + b) (a – b) . (a + b) (a – b) = a² – b²,

here a = 6m, b = 7n

(6m + 7n) (6m – 7n) = (6m)² – (7n)²

= 6m × 6m – 7n × 7n

= 36m² – 49n²