Answer:
9x^14
Step-by-step explanation:
(3x^7)^2= 3^2x^(7*2)= 9x^14
no picture?
[tex]9x^{14}[/tex]
[tex](3x^7)^2[/tex]
[tex]3^2 \times x^{7 \times 2}[/tex]
[tex]9 \times x^{14}[/tex]
