Question

How do you simplify `(4r ^ { 2} + 4r + 3) ( 3r ^ { 2} - 5r - 3)`?

Answer 1

`12r^2−8r^3−23r^2−27r−9`

Explanation:

`(4r^2)(3r^2)+(4r^2)(−5r)+(4r^2)(−3)+(4r)(3r^2)+(4r)(−5r)+(4r)(−3)+(3)(3r^2)+(3)(−5r)+(3)(−3)`
Then, simplify more!
into:
`12r^2−8r^3−23r^2−27r−9`