Question

mam=nan then p.t a[m+n]=0

Answer 1

mam = nan

mam - nan = 0

m^2a - n^2a = 0

a[m^2 - n^2] = 0

we know that m^2 - n^2 = (m+n)(m-n)

a[(m+n)(m-n)] =0

a(m+n) = 0

hope this helps!!