Answer:
12[tex]x^{6\\}[/tex]
Step-by-step explanation:
Using the rule of exponents
[tex]a^{m}[/tex] × [tex]a^{n}[/tex] ⇔ [tex]a^{(m+n)}[/tex]
Given
4[tex]x^{5\\}[/tex] × 3x
= (4 × 3 ) × [tex]x^{(5+1)}[/tex]
= 12[tex]x^{6\\}[/tex]