Question

m^2 + 17mn - 64n^2....​

Answer 1

Answer:

m 2+17mn−84n 2=(m−4n)(m+21n)

Step by Step explanation:

The given expression m2+17mn−84n 2can be factorised as follows:

m2+17mn−84n2=m 2+21mn−4mn−84n2=m(m+21n)−4n(m+21n)=(m−4n)(m+21n)

Hence, m 2+17mn−84n 2=(m−4n)(m+21n)