Solution:
[tex] \: [/tex]
[tex] \large\red{ \longrightarrow} \pmb{ \sf{(5 – 2x) (3 + x)}}[/tex]
[tex] \: [/tex]
[tex] \mapsto \: \: \: \sf{5(3 + x) – 2x(3 + x)}[/tex]
[tex] \: [/tex]
[tex] \mapsto \: \: \: \sf{(5 × 3) + (5 × x) – (2x × 3) – (2x × x)}[/tex]
[tex] \: [/tex]
[tex]\leadsto \: \: \: \sf{ 15 + 5x – 6x – 2x ^{2} }[/tex]
[tex] \: [/tex]
hope it helps!! :)
