Answer:
[tex](3 \times 10)^{ - 12} = \frac{1}{(3 \times 10)^{12} } [/tex]
Step-by-step explanation:
When we multiply two equal values with different power, we sum the two powers.
Negative power is equ to 1 over the value with positive power:
[tex](3 \times 10)^{ - 15} \times (3 \times 10) ^{3} = \\ (3 \times 10) ^{ - 15 + 3} = (3 \times 10) ^{ - 12} = \\ = \frac{1}{ {(3 \times 10)}^{12} } [/tex]
