To simplify the expression 4r2 + 4r3 + 8r2 + 8r3, combine like terms to get 12r2 + 12r3.
Simplify: 4r2 + 4r3 + 8r2 + 8r3
To simplify, combine like terms by adding the coefficients of the same variable raised to the same power. In this case, the simplified form is 12r2 + 12r3.