Question

Multiply the polynomials (2r - 5) (r + 4).
__r^2 + __r + __

Answer 1

The product of the polynomials (2r - 5)(r + 4) is:

2r(r) + 2r(4) - 5(r) - 5(4)

2r^2 + 8r - 5r - 20

Now combining like terms:

2r^2 + 3r - 20