The simplification of the number expression (4.21×10⁻⁹)(7.8×10¹⁵) is 3.2838×10⁷ after writing in the scientific notation.

What is an arithmetic operation?

It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has basic four operators that is +, -, ×, and ÷.

It is given that:

The number expression is:

= (4.21×10⁻⁹)(7.8×10¹⁵)

The expression can be defined as the combination of constants and variables with mathematical operators.

= (4.21)(7.8) = 3.2838×10×10⁶

After applying the property of integer exponent:

= 3.2838×10⁷

Thus, the simplification of the number expression (4.21×10⁻⁹)(7.8×10¹⁵) is 3.2838×10⁷ after writing in the scientific notation.

Answer:Step-by-step explanationsimplificationof thenumberexpression (4.21×10⁻⁹)(7.8×10¹⁵) is 3.2838×10⁷ after writing in thescientificnotation.## What is an arithmetic operation?

operationin which we do theadditionof numbers, subtraction,multiplication, and division. It has basicfouroperators that is +, -, ×, and ÷.expressioncan be defined as thecombinationof constants and variables with mathematicaloperators.propertyof integerexponent:simplificationof thenumberexpression (4.21×10⁻⁹)(7.8×10¹⁵) is 3.2838×10⁷ after writing in thescientificnotation.arithmetic operationhere: