1) (3m-2k)(3m+2k)=9m^2-4k^2
2)(6p+5q)(6p-5q)=36p^2-25g^2
3)(10a-3b)(3b+10a)=100a^2-9b^2
4)(4x-5y)(5y+4x)=16x^2-25y^2
5)(2a+9b)(2a-9b)=4a^2-81b^2
6)(3p+8k)(8k-3p)=64k^2-9p^2
1) (3m-2k)(3m+2k)=9m^2-4k^2
2)(6p+5q)(6p-5q)=36p^2-25g^2
3)(10a-3b)(3b+10a)=100a^2-9b^2
4)(4x-5y)(5y+4x)=16x^2-25y^2
5)(2a+9b)(2a-9b)=4a^2-81b^2
6)(3p+8k)(8k-3p)=64k^2-9p^2