Question

(2m+3n)^3 + (2m-3n)^3 + 12m (4m² - 9n^2)
​

Answer 1

Answer:

(3m−2n)(2m−3n)

at [m=1] & [n=−1]

now

=[3×1−2(−1)][2×−3(−1)]

[3+2][2+3]

5×5

=25