Question

Please help me I keep on getting the third box wrong

Answer 1

`(2 {a}^(2) + 1)(1 {a}^(2) + 9)`

Explanation:

`2 {a}^(4) + 19 {a}^(2) + 9 \\ 2 {a}^(4) + {a}^(2) + 18{a}^(2) + 9 \\ {a}^(2) (2 {a}^(2) + 1) + 9(2 {a}^(2) + 1) \\ (2 {a}^(2) + 1)( {a}^(2) + 9) \\`