Factor

Question

1. a^4-16

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

3.2x^4y^4-6x^5y^3+8x^3y

4.12m^2n^3+18m^3n^2

Answer 1

1. and 2. --- difference of squares
3. and 4. --- take out highest common factor and go from there