Answer:

Step-by-step explanation:
All numbers in scientific notation or standard form are written
,
where m is a number between 1 and 10.
9x squared over d
hope this helps:)
I'm using PEDMAS.
Multiplication first.
2 • 4 = 8
Subtraction.
20 - 4 = 16
16 + 8 = 24
Please let me know if you spot any errors (especially the fraction operation)