I need help since I don't understand this well.

Answer:
9x10^16
Step-by-step explanation:
Since your exponent 16 is same all you have to do is, Add 2+7 and write the same 10^16
So your answer will be 9x10^16
Hope this helps!
Answer:
[tex]9[/tex] × [tex]10^{32}[/tex]
All you have to do is simplify!
Step-by-step explanation:
[tex](2[/tex] × [tex]10^{16}) + (7[/tex] × [tex]10^{16}) = 9[/tex] × [tex]10^{32}[/tex]
All you have to do to simplify is add the 2 whole numbers together (2+7 = 9) and add the powers together (16 + 16 = 32, so the exponent would be [tex]10^{32}[/tex]).
I hope this helps!