Can someone answer this question please please help me I really need it if it’s correct I will mark you brainliest .

Answer:
4 * 10 ^-4
Step-by-step explanation:
2 * 10 ^- 6 * 2 * 10 ^2
Multiply the numbers
2*2 = 4
Add the exponents
10 ^ (-6+2) = 10 ^-4
4 * 10 ^-4