Question

1.)What is the product of (7u+6v)(7u-6v)?
2.)What is the product of (-m+5n)(-m-5n)?

Answer 1

1 (7u+6v)(7u-6v)
49u^2-42uv+42uv-36v^2
49u^2-36v^2
2. (-m+5n)(-m-5n)
m^2+5mn-5mn-25n^2
m^2-25n^2