3.2 x 10^4 and 1.95 x 10^6 in scientific notation subtraction
To subtract numbers written in scientific notation, we need to have the same exponent. Let's rewrite the numbers with the same exponent:
3.2 x 10^4 = 0.32 x 10^5 (multiplied by 10)
1.95 x 10^6 = 19.5 x 10^5 (divided by 10)
Now we can subtract the numbers:
0.32 x 10^5 - 19.5 x 10^5 = (0.32 - 19.5) x 10^5 = -19.18 x 10^5
However, this answer is not in proper scientific notation, because the coefficient is not between 1 and 10. To express it in proper scientific notation, we need to move the decimal point over one position to the right:
-19.18 x 10^5 = -1.918 x 10^6
So, the subtraction of 3.2 x 10^4 and 1.95 x 10^6 in scientific notation is -1.918 x 10^6.