Expand the following:

$r\left(r+5\right)$r(r+5)

$w\left(1+w\right)$w(1+w)

Distribute the multiplication:

$y\left(y-9\right)$y(y−9)

$-m\left(m+1\right)$−m(m+1)

Multiply a polynomial by a monomial involving the same variable using a variety of tools