Question

(X+7)(x+9)(x+3)(x+21)​

Answer 1

Step-by-step explanation:

$\Huge\underline{\underline{\sf ANSWER}}\\ ((x + 7)(x + 9))((x + 3)(x + 21)) \\ ({x}^{2} + 16x + 63)( {x}^{2} + 24x + 63) \\ {x}^{4} + 24 { x }^{3} + 63 {x}^{2} + 16 {x}^{3} + 384 {x}^{2} \\ + 1008x + 63 {x}^{2} + 1512x + 3969 \\ {x}^{4} + 40 {x}^{3} + 510 {x}^{2} + 2520x + 3969 \\ \\ hope \: it \: helps \: uh$