Answer:
2.2 * 10 ^7
Step-by-step explanation:
3.4 * 10 ^7 - 1.2 * 10 ^7
Since the exponent is the same we subtract the numbers out front
3.4-1.2 = 2.2
Put back the power
This is still in scientific notation
[tex]\left(3.4\cdot \:10^7\right)-\left(1.2\cdot \:10^7\right)=2.2*10^7[/tex]
