## Algebra: A Combined Approach (4th Edition)

6$x^{2 }$ + 16
( 3$x^{2}$ + 7 ) +( 3$x^{2}$ + 9 ) = (3$x^{2}$ + 3$x^{2}$ )+ ( 7 + 9 ) = combine like terms 6$x^{2}$ + 16