hi can anybody tell me the answerplease

Answer:
12[tex]x^{7}[/tex]
Step-by-step explanation:
Using the rule of exponents
[tex]a^{m}[/tex] × [tex]a^{n}[/tex] ⇔ [tex]a^{(m+n)}[/tex]
Given
3x² × 4[tex]x^{5}[/tex]
= 3 × x² × 4 × [tex]x^{5}[/tex]
= 3 × 4 × x² × [tex]x^{5}[/tex]
= 12 × [tex]x^{(2+5)}[/tex]
= 12[tex]x^{7}[/tex]
Your answer would be 9216x
Step-by-step explanation:
First you would want to simplify the first number and doing that would get you get 9
Second you would want to simplify the second number and get 1024
Third you would want to do 9 times 1024 and end up with 9216
At the very end add an X because that variable is still unknown