1.7x10^11-7.4x10^10

Answer 1

To evaluate this expression, we can subtract the numbers in scientific notation.

1.7x10^11 - 7.4x10^10

First, we need to make sure the exponents are the same. We can rewrite 7.4x10^10 as 74x10^9.

1.7x10^11 - 74x10^9

Now, since the exponents are the same, we can subtract the coefficient or the numbers in front.

1.7 - 74 = -72.3

The result in scientific notation is:
- 7.23x10^10