Question

multiply(x+4) & (2x+1)​

Answer 1

$\longrightarrow{\green{}}$ $(x + 4)(2x + 1)$

$\longrightarrow{\green{}}$ $x(2x + 1) + 4(2x + 1)$

$\longrightarrow{\green{}}$ $2 {x}^{2} + x + 8x + 4$

$\longrightarrow{\green{}}$ $2 {x}^{2} + 9x + 4$