Question

factorize- (3m-n)²- (m-2n)²​

Answer 1

Answer:

(4m - 3n) + (2m + n)

Step-by-step explanation:

(3m - n) ^2 (m - 2n)^2

a^2 - b^2 = (a+b) (a-b)

{(3m - n) + (m - 2n)} × {(3m - n) - (m - 2n)}

(3m + m -n -2n) × (3m -m -n + 2n)

(4m - 3n) × (2m + n)