Jabarkanlah ( 2 x+ 1 ) (x + 3)

(2x + 1)(x + 3) = 2x² + 6x + x + 3
                        = 2x² + 7x + 3

Terimakasih semoga membantu

(2x + 1) (x + 3)
= 2x² +6x + x + 3
= 2x² + 7x + 3