Evaluate Using Scientific Notation (210^6)(410^5)

$(2 \cdot 10^{6}) (4 \cdot 10^{5})$

Group coefficients together and exponents together to multiply numbers in scientific notation.

$(2 \cdot 4) (10^{6} \cdot 10^{5})$

Multiply $2$ by $4$ .

$8 (10^{6} \cdot 10^{5})$

Multiply $10^{6}$ by $10^{5}$ by adding the exponents.

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$8 \cdot 10^{6 + 5}$

Add $6$ and $5$ .

$8 \cdot 10^{11}$

Evaluate Using Scientific Notation (2*10^6)(4*10^5)