Answer:
The GCF is 4mn.
Step-by-step explanation:
16 m^2*n^2 − 12 m*n^2 + 20 m^2*n is the correct way to write this expression.
Note that there are 3 terms, and that 4 is common to all three coefficients. Therefore,
16 m^2*n^2 − 12 m*n^2 + 20 m^2*n = 4(4 m^2*n^2 − 3 m*n^2 + 5 m^2*n).
Also note that m and n are common to all three terms, but only in the first power: m^1 and n^1.
Thus, 4(4 m^2*n^2 − 3 m*n^2 + 5 m^2*n) = (4mn)(m*n - 3n + 5 m)
The GCF is 4mn.
