Question

Express your answer in scientific notation.

2.2 · 106 – 4.3 · 105 =
PLEASE SOMEONE ANSWER

Answer 1

To subtract two numbers in scientific notation, first make sure both numbers have the same exponent of 10. After converting 4.3 · 10^5 to the equivalent 0.43 · 10^6, simply perform the subtraction to obtain 1.77 · 10^6.

Step-by-step explanation:

To express the subtraction of 2.2 · 106 and 4.3 · 105 in scientific notation, you need to make sure the exponents of 10 are the same before performing the subtraction.

First, convert 4.3 · 105 to the same exponent as that of the first term, which is 106. You do this by realizing that 105 is ten times smaller than 106, meaning you can write 4.3 · 105 as 0.43 · 106.

Now, subtract the terms:
2.2 · 106 - 0.43 · 106 = (2.2 - 0.43) · 106 = 1.77 · 106. Your final answer, expressed in scientific notation, is 1.77 · 106.