Answer:

Step-by-step explanation:
Since you are doing
squared, you have to multiply the exponents.
4 * 2 = 8

Answer:
19.019
Step-by-step explanation:
Let's solve this problem using the order of operations, or PEMDAS.
0.019 + (2.3 × 10 - 4) = 0.019 + (23 - 4) = 0.019 + 19 = 19.019
Hope this helps!