Question

Find the difference of the numbers. Express your answer in scientific notation.

(3.57 x 10⁻⁶) - (2.19 x 10⁻¹⁷)
1.38 x 10 ⁻⁷
3.351 x 10 ⁻⁷
1.38 x 10 ⁻⁷
3.351 x 10 ⁻⁶

Answer 1

To find the difference of two numbers expressed in scientific notation, subtract the coefficients and keep the exponent the same.

Step-by-step explanation:

To find the difference between the two numbers and express the answer in scientific notation, we subtract the numbers and keep the exponent the same.

(3.57 x 10⁻⁶) - (2.19 x 10⁻¹⁷) = 3.57 x 10⁻⁶ - 2.19 x 10⁻¹⁷

Since the exponents are the same, we can subtract the coefficients: 3.57 - 2.19 = 1.38

The answer is 1.38 x 10⁻⁶