NAMASTE :)
0.00000000005
= 5 ×

Count the Digits after decimal.
We use minus (-) in power as the digit is in left side of decimal
If they are in right side then we use (+) plus sign in power.
She is incorrect because 27 is not a prime number but yet it has 7 at the end
Answer:
52.4.
Step-by-step explanation:
This is the difference of 2 squares:
a^2 - b^2 = (a - b)(a + b)
(7.62^2 - (2.38)^2
= (7.62 - 2.38)(7.62 + 2.38)
= 5.24 * 10
= 52.4
Um do you want that simplified you need to add more information or something